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NEW
Firefox can now migrate your bookmarks, history, and cookies from Google Chrome
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NEW
With Sync enabled, add-ons can now be synchronized across your computers
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NEW
The CSS text-size-adjust property is now supported
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CHANGED
Redesigned media controls for HTML5 video
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HTML5
The outerHTML property is now supported on HTML elements
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HTML5
View source syntax highlighting now uses the HTML5 parser (see bug 482921)
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DEVELOPER
The Style Editor for CSS editing is now available to web developers
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DEVELOPER
Web developers can now visualize a web page in 3D using the Page Inspector 3D View
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DEVELOPER
SPDY protocol support for faster page loads is now testable
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DEVELOPER
XMLHttpRequest now supports HTML parsing
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DEVELOPER
Files can now be stored in IndexedDB (see bug 661877)
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DEVELOPER
Websockets has now been unprefixed
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FIXED
Various security fixes
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FIXED
Firefox notifications may not work properly with Growl 1.3 or later (691662)
What’s New
Known Issues
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Unresolved
If you try to start Firefox using a locked profile, it will crash (see 573369)
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Unresolved
For some users, scrolling in the main GMail window will be slower than usual (see 579260)
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Unresolved
Some synaptic touch pads are unable to vertical scroll (see 622410)
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Unresolved
OS X: WebGL performance may be degraded on some hardware (see 713305)
Unresolved on v11 Resolved in v12 -
Unresolved
Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)