-
NEW
Enhanced three-state UI for Do Not Track (DNT)
-
NEW
Firefox will suggest how to improve your application startup time if needed
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NEW
Preliminary implementation of Firefox Health Report (see FAQ)
-
CHANGED
Ability to Restore removed thumbnails on New tab Page
-
CHANGED
Add-ons History API removals in Places
-
CHANGED
CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bugs 816298)
-
CHANGED
Graphics related performance improvements (bugs 809821)
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CHANGED
Removed E4X support from SpiderMonkey
-
DEVELOPER
Implemented Remote Profiling
-
DEVELOPER
Integrated, Add-on SDK loader and API libraries into Firefox
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HTML5
Added support for <main> element
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HTML5
Implemented scoped stylesheets
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FIXED
Some function keys may not work when pressed (833719)
-
FIXED
Browsing and Download history clearing needs unification to avoid confusion on clearing download history (847627)
View notes for:
- Desktop
- Mobile
Desktop Notes (First offered to Beta channel users on April 4, 2013)
Check out "Whats New" and "Known Issues" for this version of Firefox below. As always, youre encouraged to tell us what you think, or file a bug in Bugzilla.