Firefox for Android
Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

Version 20.0, first offered to Release channel users on April 2, 2013

Per-window Private Browsing. Learn more.
New download experience. Learn more.
Ability to close hanging plugins, without the browser hanging

20.0.1 - Windows-only update to handle issues around handling UNC paths (see bug 846848)
Details button on Crash Reporter
Unity plugin doesn't display in HiDPI mode
Various security fixes

Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.)

Developer Information
New JavaScript Profiler tool
Continued implementation of draft ECMAScript 6 - clear() and Math.imul

getUserMedia implemented for web access to the user's camera and microphone (with user permission)
Various <audio> and <video> improvements
<canvas> now supports blend modes

Some function keys may not work when pressed
Browsing and Download history clearing needs unification to avoid confusion on clearing download history

If you try to start Firefox using a locked profile, it will crash (see 573369)

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All Firefox for Android downloads