Note di rilascio:

What´s New

NEW
Firefox can now migrate your bookmarks, history, and cookies from Google Chrome
NEW
With Sync enabled, add-ons can now be synchronized across your computers
NEW
The CSS text-size-adjust property is now supported
HTML5
The outerHTML property is now supported on HTML elements
HTML5
View source syntax highlighting now uses the HTML5 parser (see bug 482921)
DEVELOPER
The Style Editor for CSS editing is now available to web developers
DEVELOPER
Web developers can now visualize a web page in 3D using the Page Inspector 3D View
DEVELOPER
SPDY protocol support for faster page loads is now testable
DEVELOPER
XMLHttpRequest now supports HTML parsing
DEVELOPER
Files can now be stored in IndexedDB (see bug 661877)
DEVELOPER
Websockets has now been unprefixed
FIXED
Redesigned media controls for HTML5 video
FIXED
Firefox notifications may not work properly with Growl 1.3 or later (691662)

Known Issues

UNRESOLVED
Two-digit browser version numbers may cause a small number of website incompatibilities (see 690287)
UNRESOLVED
If you try to start Firefox using a locked profile, it will crash (see 573369)
UNRESOLVED
For some users, scrolling in the main GMail window will be slower than usual (see 579260)
UNRESOLVED
Some synaptic touch pads are unable to vertical scroll (see 622410)
UNRESOLVED
Under certain conditions, scrolling and text input may be jerky (see 711900)