diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index cacfcf1118..bf8df273a9 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,9 +1,9 @@
 Checklist:
 
-- [ ] Correct branch: master for new features; 3.2.x for fixes
+- [ ] Correct branch: master for new features; 3.3.x & 3.2.x for fixes
 - [ ] Tests pass
-- [ ] Code follows coding guidelines: [master](https://area51.phpbb.com/docs/dev/master/development/coding_guidelines.html) and [3.2.x](https://area51.phpbb.com/docs/dev/3.2.x/development/coding_guidelines.html)
-- [ ] Commit follows commit message [format](https://area51.phpbb.com/docs/dev/3.2.x/development/git.html)
+- [ ] Code follows coding guidelines: [master](https://area51.phpbb.com/docs/dev/master/development/coding_guidelines.html), [3.3.x](https://area51.phpbb.com/docs/dev/3.3.x/development/coding_guidelines.html) and [3.2.x](https://area51.phpbb.com/docs/dev/3.2.x/development/coding_guidelines.html)
+- [ ] Commit follows commit message [format](https://area51.phpbb.com/docs/dev/3.3.x/development/git.html)
 
 Tracker ticket (set the ticket ID to **your ticket ID**):
 
diff --git a/README.md b/README.md
index d1854dc74d..aa262d5632 100644
--- a/README.md
+++ b/README.md
@@ -32,8 +32,8 @@ Read our [Vagrant documentation](phpBB/docs/vagrant.md) to find out how to use V
 We have unit and functional tests in order to prevent regressions. You can view the bamboo continuous integration [here](https://bamboo.phpbb.com) or check our travis builds below:
 
 * [![Build Status](https://travis-ci.org/phpbb/phpbb.svg?branch=master)](http://travis-ci.org/phpbb/phpbb)[![Build status](https://ci.appveyor.com/api/projects/status/8g98ybngd2f3axy1/branch/master?svg=true)](https://ci.appveyor.com/project/phpBB/phpbb/branch/master) **master** - Latest development version
+* [![Build Status](https://travis-ci.org/phpbb/phpbb.svg?branch=3.3.x)](http://travis-ci.org/phpbb/phpbb)[![Build status](https://ci.appveyor.com/api/projects/status/8g98ybngd2f3axy1/branch/3.3.x?svg=true)](https://ci.appveyor.com/project/phpBB/phpbb/branch/3.3.x) **3.3.x** - Development of version 3.3.x
 * [![Build Status](https://travis-ci.org/phpbb/phpbb.svg?branch=3.2.x)](http://travis-ci.org/phpbb/phpbb)[![Build status](https://ci.appveyor.com/api/projects/status/8g98ybngd2f3axy1/branch/3.2.x?svg=true)](https://ci.appveyor.com/project/phpBB/phpbb/branch/3.2.x) **3.2.x** - Development of version 3.2.x
-* [![Build Status](https://travis-ci.org/phpbb/phpbb.svg?branch=3.1.x)](http://travis-ci.org/phpbb/phpbb) **3.1.x** - Development of version 3.1.x
 
 ## LICENSE
 
diff --git a/build/build.xml b/build/build.xml
index ff711f435c..9e9b19923f 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -2,7 +2,7 @@
 
 <project name="phpBB" description="The phpBB forum software" default="all" basedir="../">
 	<!-- a few settings for the build -->
-	<property name="newversion" value="3.2.8-dev" />
+	<property name="newversion" value="3.3.0-b1-dev" />
 	<property name="prevversion" value="3.2.7" />
 	<property name="olderversions" value="3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.7-pl1, 3.1.8, 3.1.9, 3.1.10, 3.1.11, 3.1.12, 3.2.0-a1, 3.2.0-a2, 3.2.0-b1, 3.2.0-b2, 3.2.0-RC1, 3.2.0-RC2, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6" />
 	<!-- no configuration should be needed beyond this point -->
diff --git a/phpBB/adm/style/acp_ext_list.html b/phpBB/adm/style/acp_ext_list.html
index c3c3b3fb66..e5783124c6 100644
--- a/phpBB/adm/style/acp_ext_list.html
+++ b/phpBB/adm/style/acp_ext_list.html
@@ -7,7 +7,7 @@
 	<p>{L_EXTENSIONS_EXPLAIN}</p>
 
 	<fieldset class="quick">
-		<span class="small"><a href="https://www.phpbb.com/go/customise/extensions/3.2" target="_blank">{L_BROWSE_EXTENSIONS_DATABASE}</a> &bull; <a href="{U_VERSIONCHECK_FORCE}">{L_VERSIONCHECK_FORCE_UPDATE_ALL}</a> &bull; <a href="javascript:phpbb.toggleDisplay('version_check_settings');">{L_SETTINGS}</a></span>
+		<span class="small"><a href="https://www.phpbb.com/go/customise/extensions/3.3" target="_blank">{L_BROWSE_EXTENSIONS_DATABASE}</a> &bull; <a href="{U_VERSIONCHECK_FORCE}">{L_VERSIONCHECK_FORCE_UPDATE_ALL}</a> &bull; <a href="javascript:phpbb.toggleDisplay('version_check_settings');">{L_SETTINGS}</a></span>
 	</fieldset>
 
 	<form id="version_check_settings" method="post" action="{U_ACTION}" style="display:none">
diff --git a/phpBB/adm/style/acp_language.html b/phpBB/adm/style/acp_language.html
index 79fef94207..5e3ac9532a 100644
--- a/phpBB/adm/style/acp_language.html
+++ b/phpBB/adm/style/acp_language.html
@@ -69,7 +69,7 @@
 	<p>{L_ACP_LANGUAGE_PACKS_EXPLAIN}</p>
 
 	<fieldset class="quick">
-		<span class="small"><a href="https://www.phpbb.com/go/customise/language-packs/3.2" target="_blank">{L_BROWSE_LANGUAGE_PACKS_DATABASE}</a></span>
+		<span class="small"><a href="https://www.phpbb.com/go/customise/language-packs/3.3" target="_blank">{L_BROWSE_LANGUAGE_PACKS_DATABASE}</a></span>
 	</fieldset>
 
 	<table class="table1 zebra-table">
diff --git a/phpBB/adm/style/acp_styles.html b/phpBB/adm/style/acp_styles.html
index 38bec5a1e4..b9c3925eca 100644
--- a/phpBB/adm/style/acp_styles.html
+++ b/phpBB/adm/style/acp_styles.html
@@ -33,7 +33,7 @@
 <!-- IF L_EXPLAIN --><p>{L_EXPLAIN}</p><!-- ENDIF -->
 
 <fieldset class="quick">
-	<span class="small"><a href="https://www.phpbb.com/go/customise/styles/3.2" target="_blank">{L_BROWSE_STYLES_DATABASE}</a></span>
+	<span class="small"><a href="https://www.phpbb.com/go/customise/styles/3.3" target="_blank">{L_BROWSE_STYLES_DATABASE}</a></span>
 </fieldset>
 
 <form id="acp_styles" method="post" action="{U_ACTION}">
diff --git a/phpBB/adm/style/admin.css b/phpBB/adm/style/admin.css
index 24199eadf8..c0454dc570 100644
--- a/phpBB/adm/style/admin.css
+++ b/phpBB/adm/style/admin.css
@@ -1,4 +1,4 @@
-/*  phpBB 3.2 Admin Style Sheet
+/*  phpBB 3.3 Admin Style Sheet
 	------------------------------------------------------------------------
 	Original author:	subBlue ( http://www.subblue.com/ )
 	Copyright (c) phpBB Limited <https://www.phpbb.com>
diff --git a/phpBB/composer.json b/phpBB/composer.json
index f7941fe625..f42b6f268d 100644
--- a/phpBB/composer.json
+++ b/phpBB/composer.json
@@ -64,7 +64,7 @@
 	},
 	"extra": {
 		"branch-alias": {
-			"dev-master": "3.2.x-dev"
+			"dev-master": "3.3.x-dev"
 		}
 	},
 	"config": {
diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index b21c0ca38f..b1d45e7995 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="keywords" content="" />
-<meta name="description" content="phpBB 3.2.x Changelog" />
+<meta name="description" content="phpBB 3.3.x Changelog" />
 <title>phpBB &bull; Changelog</title>
 
 <link href="assets/css/stylesheet.css" rel="stylesheet" type="text/css" media="screen" />
@@ -21,7 +21,7 @@
 
 			<div id="doc-description">
 				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
-				<h1>phpBB 3.2.x Changelog</h1>
+				<h1>phpBB 3.3.x Changelog</h1>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
 			</div>
 
@@ -36,7 +36,7 @@
 <!-- BEGIN DOCUMENT -->
 
 <p class="paragraph main-description">
-	This is a non-exhaustive (but still near complete) changelog for phpBB 3.2.x including release candidate versions.
+	This is a non-exhaustive (but still near complete) changelog for phpBB 3.3.x including release candidate versions.
 	Our thanks to all those people who've contributed bug reports and code fixes.
 </p>
 
diff --git a/phpBB/docs/FAQ.html b/phpBB/docs/FAQ.html
index 09ee6c1ddd..fb097911d8 100644
--- a/phpBB/docs/FAQ.html
+++ b/phpBB/docs/FAQ.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="keywords" content="" />
-<meta name="description" content="phpBB 3.2.x frequently asked questions" />
+<meta name="description" content="phpBB 3.3.x frequently asked questions" />
 <title>phpBB &bull; FAQ</title>
 
 <link href="assets/css/stylesheet.css" rel="stylesheet" type="text/css" media="screen" />
@@ -21,8 +21,8 @@
 
 			<div id="doc-description">
 				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
-				<h1>phpBB 3.2.x FAQ</h1>
-				<p>phpBB 3.2.x frequently asked questions</p>
+				<h1>phpBB 3.3.x FAQ</h1>
+				<p>phpBB 3.3.x frequently asked questions</p>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
 			</div>
 
@@ -249,7 +249,7 @@ I want to sue you because i think you host an illegal board!</h2>
 
 		<div class="content">
 
-<p>Please read the paragraph about permissions in our extensive <a href="https://www.phpbb.com/support/docs/en/3.2/ug/">online documentation</a>.</p>
+<p>Please read the paragraph about permissions in our extensive <a href="https://www.phpbb.com/support/docs/en/3.3/ug/">online documentation</a>.</p>
 
 		</div>
 
@@ -305,7 +305,7 @@ I want to sue you because i think you host an illegal board!</h2>
 
 		<div class="content">
 
-<p>Please read our <a href="https://www.phpbb.com/support/docs/en/3.2/ug/">extensive user documentation</a> first, it may just explain what you want to know.</p>
+<p>Please read our <a href="https://www.phpbb.com/support/docs/en/3.3/ug/">extensive user documentation</a> first, it may just explain what you want to know.</p>
 
 <p>Feel free to search our community forum for the information you require. <strong>PLEASE DO NOT</strong> post your question without having first used search, chances are someone has already asked and answered your question. You can find our board here:</p>
 
diff --git a/phpBB/docs/INSTALL.html b/phpBB/docs/INSTALL.html
index 7edfa8b43d..33609837eb 100644
--- a/phpBB/docs/INSTALL.html
+++ b/phpBB/docs/INSTALL.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="keywords" content="" />
-<meta name="description" content="phpBB 3.2.x Installation, updating and conversion informations" />
+<meta name="description" content="phpBB 3.3.x Installation, updating and conversion informations" />
 <title>phpBB &bull; Install</title>
 
 <link href="assets/css/stylesheet.css" rel="stylesheet" type="text/css" media="screen" />
@@ -21,8 +21,8 @@
 
 			<div id="doc-description">
 				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
-				<h1>phpBB 3.2.x Install</h1>
-				<p>phpBB 3.2.x Installation, updating and conversion informations</p>
+				<h1>phpBB 3.3.x Install</h1>
+				<p>phpBB 3.3.x Installation, updating and conversion informations</p>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
 			</div>
 
@@ -44,7 +44,7 @@
 	<p>
 		A basic overview of running phpBB can be found in the accompanying <a href="README.html">README</a> file.
 		Please ensure you read that document in addition to this! For more detailed information on using, installing,
-		updating and converting phpBB you should read <a href="https://www.phpbb.com/support/docs/en/3.2/ug/">the documentation</a>
+		updating and converting phpBB you should read <a href="https://www.phpbb.com/support/docs/en/3.3/ug/">the documentation</a>
 		available online.
 	</p>
 </div>
@@ -59,7 +59,7 @@
 	<li><a href="#quickinstall">Quick install</a></li>
 	<li><a href="#require">Requirements</a></li>
 	<li><a href="#install">New installation</a></li>
-	<li><a href="#update">Updating from stable releases of phpBB 3.2.x</a>
+	<li><a href="#update">Updating from stable releases of phpBB 3.3.x</a>
 	<ol style="list-style-type: lower-roman;">
 		<li><a href="#update_full">Full package</a></li>
 		<li><a href="#update_files">Changed files</a></li>
@@ -68,8 +68,8 @@
 		<li><a href="#update_all">All package types</a></li>
 	</ol>
 	</li>
-	<li><a href="#update30_31">Updating from phpBB 3.0.x/3.1.x to phpBB 3.2.x</a></li>
-	<li><a href="#convert">Conversion from phpBB 2.0.x to phpBB 3.2.x</a>
+	<li><a href="#update30_31">Updating from phpBB 3.0.x/3.1.x to phpBB 3.2.x or phpBB 3.3.x</a></li>
+	<li><a href="#convert">Conversion from phpBB 2.0.x to phpBB 3.3.x</a>
 	<ol style="list-style-type: lower-roman;">
 		<li><a href="#prereq">Requirements before converting</a></li>
 		<li><a href="#conversion">Converting</a></li>
@@ -139,7 +139,7 @@
 		<li>A webserver or web hosting account running on any major Operating System with support for PHP</li>
 		<li>A SQL database system, <strong>one of</strong>:
 		<ul>
-			<li>MySQL 3.23 or above (MySQLi supported)</li>
+			<li>MySQL 4.1.3 or above (MySQLi required)</li>
 			<li>MariaDB 5.1 or above</li>
 			<li>PostgreSQL 8.3+</li>
 			<li>SQLite 3.6.15+</li>
@@ -151,6 +151,7 @@
 		<li>The following PHP modules are required:
 		<ul>
 			<li>json</li>
+			<li>XML support</li>
 		</ul>
 		</li>
 		<li>getimagesize() function must be enabled.</li>
@@ -158,13 +159,12 @@
 		<ul>
 			<li>zlib Compression support</li>
 			<li>Remote FTP support</li>
-			<li>XML support</li>
 			<li>GD Support</li>
 		</ul>
 		</li>
 	</ul>
 
-	<p>If your server or hosting account does not meet the requirements above then you will be unable to install phpBB 3.2.x.</p>
+	<p>If your server or hosting account does not meet the requirements above then you will be unable to install phpBB 3.3.x.</p>
 
 		</div>
 
@@ -255,7 +255,7 @@
 
 	<hr />
 
-	<a name="update"></a><h2>4. Updating from stable releases of phpBB 3.2.x</h2>
+	<a name="update"></a><h2>4. Updating from stable releases of phpBB 3.3.x</h2>
 
 	<div class="paragraph">
 		<div class="inner">
@@ -280,7 +280,7 @@
 
 	<p>This package is meant for those wanting to only replace the files that were changed between a previous version and the latest version.</p>
 
-	<p>This package contains a number of archives, each contains the files changed from a given release to the latest version. You should select the appropriate archive for your current version, e.g. if you currently have <strong>3.2.0</strong> you should select the appropriate <code>phpBB-3.2.1-files.zip/tar.bz2</code> file.</p>
+	<p>This package contains a number of archives, each contains the files changed from a given release to the latest version. You should select the appropriate archive for your current version, e.g. if you currently have <strong>3.3.0</strong> you should select the appropriate <code>phpBB-3.3.1-files.zip/tar.bz2</code> file.</p>
 
 	<p>The directory structure has been preserved, enabling you (if you wish) to simply upload the uncompressed contents of the archive to the appropriate location on your server, i.e. simply overwrite the existing files with the new versions. Do not forget that if you have installed any modifications (MODs) these files will overwrite the originals, possibly destroying them in the process. You will need to re-add MODs to any affected file before uploading.</p>
 
@@ -292,7 +292,7 @@
 
 	<p>The patch file is one solution for those with changes in to the phpBB core files and do not want to re-add them back to all the changed files. To use this you will need command line access to a standard UNIX type <strong>patch</strong> application. If you do not have access to such an application, but still want to use this update approach, we strongly recommend the <a href="#update_auto">Automatic update package</a> explained below. It is also the recommended update method.</p>
 
-	<p>A number of patch files are provided to allow you to update from previous stable releases. Select the correct patch, e.g. if your current version is <strong>3.2.0</strong>, you need the <code>phpBB-3.2.1-patch.zip/tar.bz2</code> file. Place the correct patch in the parent directory containing the phpBB core files (i.e. index.php, viewforum.php, etc.). With this done you should run the following command: <code>patch -cl -d [PHPBB DIRECTORY] -p1 &lt; [PATCH NAME]</code> (where PHPBB DIRECTORY is the directory name your phpBB Installation resides in, for example phpBB, and where PATCH NAME is the relevant filename of the selected patch file). This should complete quickly, hopefully without any HUNK FAILED comments.</p>
+	<p>A number of patch files are provided to allow you to update from previous stable releases. Select the correct patch, e.g. if your current version is <strong>3.3.0</strong>, you need the <code>phpBB-3.3.1-patch.zip/tar.bz2</code> file. Place the correct patch in the parent directory containing the phpBB core files (i.e. index.php, viewforum.php, etc.). With this done you should run the following command: <code>patch -cl -d [PHPBB DIRECTORY] -p1 &lt; [PATCH NAME]</code> (where PHPBB DIRECTORY is the directory name your phpBB Installation resides in, for example phpBB, and where PATCH NAME is the relevant filename of the selected patch file). This should complete quickly, hopefully without any HUNK FAILED comments.</p>
 
 	<p>If you do get failures, you should look at using the <a href="#update_files">Changed Files</a> package to replace the files which failed to patch. Please note that you will need to manually re-add any MODs to these particular files. Alternatively, if you know how, you can examine the .rej files to determine what failed where and make manual adjustments to the relevant source.</p>
 
@@ -302,7 +302,7 @@
 
 	<p>This update method is only recommended for installations with modifications to core phpBB files. This package detects changed files automatically and merges in changes if needed.</p>
 
-	<p>The automatic update package will update the board from a given version to the latest version. A number of automatic update files are available, and you should choose the one that corresponds to the version of the board that you are currently running. For example, if your current version is <strong>3.2.0</strong>, you need the <code>phpBB-3.2.0_to_3.2.1.zip/tar.bz2</code> file.</p>
+	<p>The automatic update package will update the board from a given version to the latest version. A number of automatic update files are available, and you should choose the one that corresponds to the version of the board that you are currently running. For example, if your current version is <strong>3.3.0</strong>, you need the <code>phpBB-3.3.0_to_3.3.1.zip/tar.bz2</code> file.</p>
 
 	<p>To perform the update, either follow the instructions from the <strong>Administration Control Panel-&gt;System</strong> Tab - this should point out that you are running an outdated version and will guide you through the update - or follow the instructions listed below.</p>
 
@@ -331,16 +331,16 @@
 
 	<hr />
 
-	<a name="update30_31"></a><h2>5. Updating from phpBB 3.0.x/3.1x to phpBB 3.2.x</h2>
+	<a name="update30_31"></a><h2>5. Updating from phpBB 3.0.x/3.1x to phpBB 3.2.x or phpBB 3.3.x</h2>
 
 	<div class="paragraph">
 		<div class="inner"><span class="corners-top"><span></span></span>
 
 		<div class="content">
 
-			<p>Updating from phpBB 3.0.x or 3.1.x to 3.2.x is just the same as <a href="#update">updating from stable releases of phpBB 3.2.x</a></p>
+			<p>Updating from phpBB 3.0.x or 3.1.x to 3.2.x or 3.3.x is just the same as <a href="#update">updating from stable releases of phpBB 3.3.x</a></p>
 
-			<p>However you can also start with a new set of phpBB 3.2.x files.</p>
+			<p>However you can also start with a new set of phpBB 3.3.x files.</p>
 
 			<ol>
 				<li>Delete all files <strong>EXCEPT</strong> for the following:
@@ -353,7 +353,7 @@
 					<li>(The <code>ext/</code> directory</li>
 				</ul></li>
 
-				<li>Upload the contents of the 3.2.x Full Package into your forum's directory. Make sure the root level .htaccess file is included in the upload.</li>
+				<li>Upload the contents of the 3.3.x Full Package into your forum's directory. Make sure the root level .htaccess file is included in the upload.</li>
 				<li>Browse to <code>/install/app.php/update</code></li>
 				<li>Read the notice <em>Update database only</em> and press <strong>Submit</strong></li>
 				<li>Delete the <code>install/</code> directory</li>
@@ -367,7 +367,7 @@
 
 	<hr />
 
-	<a name="convert"></a><h2>6. Conversion from phpBB 2.0.x to phpBB 3.2.x</h2>
+	<a name="convert"></a><h2>6. Conversion from phpBB 2.0.x to phpBB 3.3.x</h2>
 
 	<div class="paragraph">
 		<div class="inner">
diff --git a/phpBB/docs/README.html b/phpBB/docs/README.html
index 85a00ef24b..ca50fe95be 100644
--- a/phpBB/docs/README.html
+++ b/phpBB/docs/README.html
@@ -4,7 +4,7 @@
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="keywords" content="" />
-<meta name="description" content="phpBB 3.2.x Readme" />
+<meta name="description" content="phpBB 3.3.x Readme" />
 <title>phpBB &bull; Readme</title>
 
 <link href="assets/css/stylesheet.css" rel="stylesheet" type="text/css" media="screen" />
@@ -21,7 +21,7 @@
 
 			<div id="doc-description">
 				<a href="../index.php" id="logo"><img src="assets/images/site_logo.gif" alt="" /></a>
-				<h1>phpBB 3.2.x Readme</h1>
+				<h1>phpBB 3.3.x Readme</h1>
 				<p style="display: none;"><a href="#start_here">Skip</a></p>
 			</div>
 
@@ -91,13 +91,13 @@
 		<div class="content">
 	<p>Installation, update and conversion instructions can be found in the <a href="INSTALL.html">INSTALL</a> document in this directory. If you are intending on converting from a phpBB 2.0.x or 3.0.x installation we highly recommend that you backup any existing data before proceeding!</p>
 
-	<p>Users of phpBB 3.0, 3.1 and 3.2 Beta versions cannot directly update.</p>
+	<p>Users of phpBB 3.0, 3.1, 3.2, and 3.3 Beta versions cannot directly update.</p>
 
 	<p>Please note that we don't support the following installation types:</p>
 	<ul>
 		<li>Updates from phpBB Beta versions and lower to phpBB Release Candidates and higher</li>
-		<li>Conversions from phpBB 2.0.x to phpBB 3.0 Beta, 3.1 Beta and 3.2 Beta versions</li>
-		<li>phpBB 3.0 Beta, 3.1 Beta or 3.2 beta installations</li>
+		<li>Conversions from phpBB 2.0.x to phpBB 3.0 Beta, 3.1 Beta, 3.2 Beta, and 3.3 Beta versions</li>
+		<li>phpBB 3.0 Beta, 3.1 Beta, 3.2 beta, or 3.3 beta installations</li>
 	</ul>
 
 	<p>We give support for the following installation types:</p>
@@ -106,8 +106,8 @@
 		<li>Updates from phpBB 3.0 RC1, 3.1 RC1 and 3.2 RC1 to the latest version</li>
 		<li>Note: if using the <em>Automatic Update Package</em>, updates are supported from phpBB 3.0.2 onward. To update a pre-3.0.2 installation, first update to 3.0.2 and then update to the current version.</li>
 		<li>Conversions from phpBB 2.0.x to the latest version</li>
-		<li>New installations of phpBB 3.1.x - only the latest released version</li>
 		<li>New installations of phpBB 3.2.x - only the latest released version</li>
+		<li>New installations of phpBB 3.3.x - only the latest released version</li>
 	</ul>
 
 		</div>
@@ -184,7 +184,7 @@
 
 	<p>Comprehensive documentation is now available on the phpBB website:</p>
 
-	<p><a href="https://www.phpbb.com/support/docs/en/3.2/ug/">https://www.phpbb.com/support/docs/en/3.2/ug/</a></p>
+	<p><a href="https://www.phpbb.com/support/docs/en/3.3/ug/">https://www.phpbb.com/support/docs/en/3.3/ug/</a></p>
 
 	<p>This covers everything from installation to setting permissions and managing users.</p>
 
@@ -224,7 +224,7 @@
 
 		<div class="content">
 
-	<p>This is a stable release of phpBB. The 3.2.x line is feature frozen, with point releases principally including fixes for bugs and security issues. Feature alterations and minor feature additions may be done if deemed absolutely required. The next major release will be phpBB 3.3 which is currently under development. Please do not post questions asking when 3.3 will be available, no release date has been set.</p>
+	<p>This is a stable release of phpBB. The 3.3.x line is feature frozen, with point releases principally including fixes for bugs and security issues. Feature alterations and minor feature additions may be done if deemed absolutely required. The next major release will be phpBB 3.3 which is currently under development. Please do not post questions asking when 3.3 will be available, no release date has been set.</p>
 
 	<p>Those interested in the development of phpBB should keep an eye on the development forums to see how things are progressing:</p>
 
@@ -273,7 +273,7 @@
 
 	<p>Please be as detailed as you can in your report, and if possible, list the steps required to duplicate the problem. If you have a patch that fixes the issue, please attach it to the ticket or submit a pull request to our repository <a href="https://github.com/phpbb/phpbb">on GitHub</a>.</p>
 
-	<p>If you create a patch, it is very much appreciated (but not required) if you follow the phpBB coding guidelines. Please note that the coding guidelines are somewhat different between different versions of phpBB. For phpBB 3.2.x the coding guidelines may be found here: <a href="http://area51.phpbb.com/docs/32x/coding-guidelines.html">http://area51.phpbb.com/docs/32x/coding-guidelines.html</a></p>
+	<p>If you create a patch, it is very much appreciated (but not required) if you follow the phpBB coding guidelines. Please note that the coding guidelines are somewhat different between different versions of phpBB. For phpBB 3.3.x the coding guidelines may be found here: <a href="http://area51.phpbb.com/docs/33x/coding-guidelines.html">http://area51.phpbb.com/docs/33x/coding-guidelines.html</a></p>
 
 	<p>Once a bug has been submitted you will be emailed any follow up comments added to it. <strong>Please</strong> if you are requested to supply additional information, do so! It is frustrating for us to receive bug reports, ask for additional information but get nothing. In these cases we have a policy of closing the bug, which may leave a very real problem in place. Obviously we would rather not have this situation arise.</p>
 
@@ -323,11 +323,11 @@
 
 		<div class="content">
 
-	<p>phpBB 3.2.x takes advantage of new features added in PHP 7.1.0. We recommend that you upgrade to the latest stable release of PHP to run phpBB. The minimum version required is PHP 7.1.0 and the maximum supported version is the latest stable version of PHP.</p>
+	<p>phpBB 3.3.x takes advantage of new features added in PHP 7.1.0. We recommend that you upgrade to the latest stable release of PHP to run phpBB. The minimum version required is PHP 7.1.0 and the maximum supported version is the latest stable version of PHP.</p>
 
 	<p>Please remember that running any application on a development (unstable, e.g. a beta release) version of PHP can lead to strange/unexpected results which may appear to be bugs in the application. Therefore, we recommend you upgrade to the newest stable version of PHP before running phpBB. If you are running a development version of PHP please check any bugs you find on a system running a stable release before submitting.</p>
 
-	<p>This board has been developed and tested under Linux and Windows (amongst others) running Apache using MySQL 3.23, 4.x, 5.x, MariaDB 5.x, PostgreSQL 8.x, Oracle 8 and SQLite 3. Versions of PHP used range from 7.1.0 to 7.2.x and 7.3.x without issues.</p>
+	<p>This board has been developed and tested under Linux and Windows (amongst others) running Apache using MySQLi 4.1.3, 4.x, 5.x, MariaDB 5.x, PostgreSQL 8.x, Oracle 8 and SQLite 3. Versions of PHP used range from 7.1.0 to 7.2.x and 7.3.x without issues.</p>
 
 <a name="phpsec"></a><h3>7.i. Notice on PHP security issues</h3>
 
diff --git a/phpBB/docs/coding-guidelines.html b/phpBB/docs/coding-guidelines.html
index 8bbada9a7f..72ad115e71 100644
--- a/phpBB/docs/coding-guidelines.html
+++ b/phpBB/docs/coding-guidelines.html
@@ -1184,8 +1184,8 @@ append_sid(&quot;{$phpbb_root_path}memberlist.$phpEx&quot;, 'mode=group&amp;amp;
 # General Information about this style
 name = prosilver_duplicate
 copyright = © phpBB Limited, 2007
-style_version = 3.2.0
-phpbb_version = 3.2.0
+style_version = 3.3.0
+phpbb_version = 3.3.0
 
 # Defining a different template bitfield
 # template_bitfield = lNg=
diff --git a/phpBB/includes/constants.php b/phpBB/includes/constants.php
index ba4856a1cc..9f7a325a2b 100644
--- a/phpBB/includes/constants.php
+++ b/phpBB/includes/constants.php
@@ -28,7 +28,7 @@ if (!defined('IN_PHPBB'))
 */
 
 // phpBB Version
-@define('PHPBB_VERSION', '3.2.8-dev');
+@define('PHPBB_VERSION', '3.3.0-b1-dev');
 
 // QA-related
 // define('PHPBB_QA', 1);
diff --git a/phpBB/includes/functions_module.php b/phpBB/includes/functions_module.php
index 9c4ee1a631..510d98ec11 100644
--- a/phpBB/includes/functions_module.php
+++ b/phpBB/includes/functions_module.php
@@ -123,7 +123,7 @@ class p_master
 
 		// We "could" build a true tree with this function - maybe mod authors want to use this...
 		// Functions for traversing and manipulating the tree are not available though
-		// We might re-structure the module system to use true trees in 3.2.x...
+		// We might re-structure the module system to use true trees in 4.0
 		// $tree = $this->build_tree($this->module_cache['modules'], $this->module_cache['parents']);
 
 		// Clean up module cache array to only let survive modules the user can access
diff --git a/phpBB/install/convertors/convert_phpbb20.php b/phpBB/install/convertors/convert_phpbb20.php
index 230b999c87..c4d2be5a28 100644
--- a/phpBB/install/convertors/convert_phpbb20.php
+++ b/phpBB/install/convertors/convert_phpbb20.php
@@ -38,7 +38,7 @@ $dbms = $phpbb_config_php_file->convert_30_dbms_to_31($dbms);
 $convertor_data = array(
 	'forum_name'	=> 'phpBB 2.0.x',
 	'version'		=> '1.0.3',
-	'phpbb_version'	=> '3.2.7',
+	'phpbb_version'	=> '3.3.0',
 	'author'		=> '<a href="https://www.phpbb.com/">phpBB Limited</a>',
 	'dbms'			=> $dbms,
 	'dbhost'		=> $dbhost,
diff --git a/phpBB/install/phpbbcli.php b/phpBB/install/phpbbcli.php
index 217f1dfbd4..51fa9f51ed 100755
--- a/phpBB/install/phpbbcli.php
+++ b/phpBB/install/phpbbcli.php
@@ -23,7 +23,7 @@ if (php_sapi_name() !== 'cli')
 define('IN_PHPBB', true);
 define('IN_INSTALL', true);
 define('PHPBB_ENVIRONMENT', 'production');
-define('PHPBB_VERSION', '3.2.7');
+define('PHPBB_VERSION', '3.3.0-b1');
 $phpbb_root_path = __DIR__ . '/../';
 $phpEx = substr(strrchr(__FILE__, '.'), 1);
 
diff --git a/phpBB/install/schemas/schema_data.sql b/phpBB/install/schemas/schema_data.sql
index 539d16353e..2854f71606 100644
--- a/phpBB/install/schemas/schema_data.sql
+++ b/phpBB/install/schemas/schema_data.sql
@@ -279,7 +279,7 @@ INSERT INTO phpbb_config (config_name, config_value) VALUES ('tpl_allow_php', '0
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('upload_icons_path', 'images/upload_icons');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('upload_path', 'files');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('use_system_cron', '0');
-INSERT INTO phpbb_config (config_name, config_value) VALUES ('version', '3.2.8-dev');
+INSERT INTO phpbb_config (config_name, config_value) VALUES ('version', '3.3.0-b1-dev');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('warnings_expire_days', '90');
 INSERT INTO phpbb_config (config_name, config_value) VALUES ('warnings_gc', '14400');
 
diff --git a/phpBB/language/en/acp/permissions.php b/phpBB/language/en/acp/permissions.php
index 54d968cdaa..875e424906 100644
--- a/phpBB/language/en/acp/permissions.php
+++ b/phpBB/language/en/acp/permissions.php
@@ -54,7 +54,7 @@ $lang = array_merge($lang, array(
 
 		<br />
 
-		<p>For further information on setting up and managing permissions on your phpBB3 board, please see the section on <a href="https://www.phpbb.com/support/docs/en/3.2/ug/quickstart/permissions/">Setting permissions of our Quick Start Guide</a>.</p>
+		<p>For further information on setting up and managing permissions on your phpBB3 board, please see the section on <a href="https://www.phpbb.com/support/docs/en/3.3/ug/quickstart/permissions/">Setting permissions of our Quick Start Guide</a>.</p>
 	',
 
 	'ACL_NEVER'				=> 'Never',
diff --git a/phpBB/language/en/install.php b/phpBB/language/en/install.php
index 7591eb16ec..2fd2cfd89f 100644
--- a/phpBB/language/en/install.php
+++ b/phpBB/language/en/install.php
@@ -49,7 +49,7 @@ $lang = array_merge($lang, array(
 
 	// Support page
 	'SUPPORT_TITLE'		=> 'Support',
-	'SUPPORT_BODY'		=> 'Full support will be provided for the current stable release of phpBB3, free of charge. This includes:</p><ul><li>installation</li><li>configuration</li><li>technical questions</li><li>problems relating to potential bugs in the software</li><li>updating from Release Candidate (RC) versions to the latest stable version</li><li>converting from phpBB 2.0.x to phpBB3</li><li>converting from other discussion board software to phpBB3 (please see the <a href="https://www.phpbb.com/community/viewforum.php?f=486">Convertors Forum</a>)</li></ul><p>We encourage users still running beta versions of phpBB3 to replace their installation with a fresh copy of the latest version.</p><h2>Extensions / Styles</h2><p>For issues relating to Extensions, please post in the appropriate <a href="https://www.phpbb.com/community/viewforum.php?f=451">Extensions Forum</a>.<br />For issues relating to styles, templates and themes, please post in the appropriate <a href="https://www.phpbb.com/community/viewforum.php?f=471">Styles Forum</a>.<br /><br />If your question relates to a specific package, please post directly in the topic dedicated to the package.</p><h2>Obtaining Support</h2><p><a href="https://www.phpbb.com/support/">Support Section</a><br /><a href="https://www.phpbb.com/support/docs/en/3.2/ug/quickstart/">Quick Start Guide</a><br /><br />To ensure you stay up to date with the latest news and releases, follow us on <a href="https://www.twitter.com/phpbb/">Twitter</a> and <a href="https://www.facebook.com/phpbb/">Facebook</a><br /><br />',
+	'SUPPORT_BODY'		=> 'Full support will be provided for the current stable release of phpBB3, free of charge. This includes:</p><ul><li>installation</li><li>configuration</li><li>technical questions</li><li>problems relating to potential bugs in the software</li><li>updating from Release Candidate (RC) versions to the latest stable version</li><li>converting from phpBB 2.0.x to phpBB3</li><li>converting from other discussion board software to phpBB3 (please see the <a href="https://www.phpbb.com/community/viewforum.php?f=486">Convertors Forum</a>)</li></ul><p>We encourage users still running beta versions of phpBB3 to replace their installation with a fresh copy of the latest version.</p><h2>Extensions / Styles</h2><p>For issues relating to Extensions, please post in the appropriate <a href="https://www.phpbb.com/community/viewforum.php?f=451">Extensions Forum</a>.<br />For issues relating to styles, templates and themes, please post in the appropriate <a href="https://www.phpbb.com/community/viewforum.php?f=471">Styles Forum</a>.<br /><br />If your question relates to a specific package, please post directly in the topic dedicated to the package.</p><h2>Obtaining Support</h2><p><a href="https://www.phpbb.com/support/">Support Section</a><br /><a href="https://www.phpbb.com/support/docs/en/3.3/ug/quickstart/">Quick Start Guide</a><br /><br />To ensure you stay up to date with the latest news and releases, follow us on <a href="https://www.twitter.com/phpbb/">Twitter</a> and <a href="https://www.facebook.com/phpbb/">Facebook</a><br /><br />',
 
 	// License
 	'LICENSE_TITLE'		=> 'General Public License',
@@ -70,7 +70,7 @@ $lang = array_merge($lang, array(
 
 	<p>phpBB3 supports the following databases:</p>
 	<ul>
-		<li>MySQL 3.23 or above (MySQLi supported)</li>
+		<li>MySQL 4.1.3 or above (MySQLi required)</li>
 		<li>PostgreSQL 8.3+</li>
 		<li>SQLite 3.6.15+</li>
 		<li>MS SQL Server 2000 or above (directly or via ODBC)</li>
@@ -565,7 +565,7 @@ $lang = array_merge($lang, array(
 
 	// Finish conversion
 	'CONVERT_COMPLETE'			=> 'Conversion completed',
-	'CONVERT_COMPLETE_EXPLAIN'	=> 'You have now successfully converted your board to phpBB 3.2. You can now login and <a href="../">access your board</a>. Please ensure that the settings were transferred correctly before enabling your board by deleting the install directory. Remember that help on using phpBB is available online via the <a href="https://www.phpbb.com/support/docs/en/3.2/ug/">Documentation</a> and the <a href="https://www.phpbb.com/community/viewforum.php?f=466">support forums</a>.',
+	'CONVERT_COMPLETE_EXPLAIN'	=> 'You have now successfully converted your board to phpBB 3.3. You can now login and <a href="../">access your board</a>. Please ensure that the settings were transferred correctly before enabling your board by deleting the install directory. Remember that help on using phpBB is available online via the <a href="https://www.phpbb.com/support/docs/en/3.2/ug/">Documentation</a> and the <a href="https://www.phpbb.com/community/viewforum.php?f=466">support forums</a>.',
 
 	'CONV_ERROR_ATTACH_FTP_DIR'			=> 'FTP upload for attachments is enabled at the old board. Please disable the FTP upload option and make sure a valid upload directory is specified, then copy all attachment files to this new web accessible directory. Once you have done this, restart the convertor.',
 	'CONV_ERROR_CONFIG_EMPTY'			=> 'There is no configuration information available for the conversion.',
diff --git a/phpBB/phpbb/install/module/install_filesystem/task/create_config_file.php b/phpBB/phpbb/install/module/install_filesystem/task/create_config_file.php
index 47537ba549..900d5b94bc 100644
--- a/phpBB/phpbb/install/module/install_filesystem/task/create_config_file.php
+++ b/phpBB/phpbb/install/module/install_filesystem/task/create_config_file.php
@@ -165,7 +165,7 @@ class create_config_file extends \phpbb\install\task_base
 	protected function get_config_data($debug = false, $debug_container = false, $environment = null)
 	{
 		$config_content = "<?php\n";
-		$config_content .= "// phpBB 3.2.x auto-generated configuration file\n// Do not change anything in this file!\n";
+		$config_content .= "// phpBB 3.3.x auto-generated configuration file\n// Do not change anything in this file!\n";
 
 		$dbms = $this->install_config->get('dbms');
 		$db_driver = $this->db_helper->get_available_dbms($dbms);
diff --git a/phpBB/styles/prosilver/style.cfg b/phpBB/styles/prosilver/style.cfg
index 4485b17945..cdf67d5a0c 100644
--- a/phpBB/styles/prosilver/style.cfg
+++ b/phpBB/styles/prosilver/style.cfg
@@ -21,8 +21,8 @@
 # General Information about this style
 name = prosilver
 copyright = © phpBB Limited, 2007
-style_version = 3.2.7
-phpbb_version = 3.2.7
+style_version = 3.3.0-b1
+phpbb_version = 3.3.0-b1
 
 # Defining a different template bitfield
 # template_bitfield = //g=
diff --git a/phpBB/styles/prosilver/theme/stylesheet.css b/phpBB/styles/prosilver/theme/stylesheet.css
index 45eb5b6fc9..c402d563c6 100644
--- a/phpBB/styles/prosilver/theme/stylesheet.css
+++ b/phpBB/styles/prosilver/theme/stylesheet.css
@@ -1,21 +1,21 @@
 /*  phpBB3 Style Sheet
     --------------------------------------------------------------
-	Style name:			prosilver (the default phpBB 3.2.x style)
+	Style name:			prosilver (the default phpBB 3.3.x style)
 	Based on style:
 	Original author:	Tom Beddard ( http://www.subblue.com/ )
 	Modified by:		phpBB Limited ( https://www.phpbb.com/ )
     --------------------------------------------------------------
 */
 
-@import url("normalize.css?v=3.2");
-@import url("base.css?v=3.2");
-@import url("utilities.css?v=3.2");
-@import url("common.css?v=3.2");
-@import url("links.css?v=3.2");
-@import url("content.css?v=3.2");
-@import url("buttons.css?v=3.2");
-@import url("cp.css?v=3.2");
-@import url("forms.css?v=3.2");
-@import url("icons.css?v=3.2");
-@import url("colours.css?v=3.2");
-@import url("responsive.css?v=3.2");
+@import url("normalize.css?v=3.3");
+@import url("base.css?v=3.3");
+@import url("utilities.css?v=3.3");
+@import url("common.css?v=3.3");
+@import url("links.css?v=3.3");
+@import url("content.css?v=3.3");
+@import url("buttons.css?v=3.3");
+@import url("cp.css?v=3.3");
+@import url("forms.css?v=3.3");
+@import url("icons.css?v=3.3");
+@import url("colours.css?v=3.3");
+@import url("responsive.css?v=3.3");