Firefox 20 is out now and it has arrived on its FTP servers for a while.
Firefox 20 is the latest release based on Gecko 20 engine featuring numerous improvements over its predecessor, Firefox 19. The log changes for Firefox 20 were originally published on 21 February 2013. The browser has been released in over 70 languages with 10 additional test languages.
In this release, Firefox 20 features a panel-based download manager, which now resides in the browser's toolbar meaning that users will always be able to see downloads in progress and previously completed ones.
Other features that are available are H.264 decoding on the < video > tag and per-window private browsing (per-tab private browsing on Android).
Right now, here are a complete list of changes in Firefox 20:
WHAT'S NEW IN FIREFOX 20
(NEW) Per-window Private Browsing.
(NEW) New download experience.
(NEW) Ability to close hanging plugins, without the browser hanging.
(CHANGED) Continued performance improvements around common browser tasks, including page loads, downloads, shutdown, etc.
(DEVELOPER) Continued implementation of draft ECMAScript 6-clear() and Math.imul.
(HTML5) getUserMedia implemented for web access to the user's camera and microphone (with user permission)
(HTML5) < canvas > now supports blend modes.
(HTML5) Various improvements to < audio > and < video >.
(FIXED) Details button on Crash Reporter.
(FIXED) Unity plugin doesn't display in HDPI mode.
(UNRESOLVED) If you try to start Firefox using a locked profile, it will crash.
(UNRESOLVED) Some function keys may not work when pressed. This issue remaines unresolved since Firefox 19 and will be fixed in Firefox 21.
(UNRESOLVED) Browsing and Download history clearing needs unification to avoid confusion on clearing download history. This issue is unresolved in Firefox 20 and will be resolved in Firefox 21.
(UNRESOLVED) Download statusbar add-on continues downloading files from Normal Browsing, when switching to Private Browsing.
(UNRESOLVED) Copy actions are broken on HTML5 videos. This issue remains unresolved since Firefox 19 and will be resolved in Firefox 21.
In order to install Firefox 20, your computer must meet or exceed the following system requirements:
A Pentium 4 or newer processor with SSE2 instructions or better.
Windows XP SP2, Windows Server 2003 SP11, Mac OS 10.6 or newer
512 MB of system memory2
200 MB of hard disk space
1 While 32-bit and 64-bit versions of Windows Vista and up can be used to run Firefox, only 32-bit official builds of the browser are supported at this time.
2 Firefox may run on slower computers with less memory, but it will be less usable.
Download Firefox 20 now: releases.mozilla.org/pub/mozil…
Now that Firefox 20 is out, support for Firefox 19 has come to a end. Firefox 21 will migrate to the Beta channels later this week, Firefox 22 will migrate to the Aurora channels very soon and Firefox 23 will make its first appearance in the Nightly channels.
The first public beta release of Firefox 21 will be out later this week and the final version to the successor of Firefox 20 will be released on 14 May 2013.