What’s New

NEW
Google searches now utilize HTTPS
NEW
Full screen support for Mac OS X Lion implemented
NEW
Plugins can now be configured to only load on click (requires an about:config change)
NEW
The Awesome Bar now auto-completes typed URLs
CHANGED
Improved site identity manager, to prevent spoofing of an SSL connection with favicons
DEVELOPER
Pointer Lock API implemented
DEVELOPER
New API to prevent your display from sleeping
DEVELOPER
New text-transform and font-variant CSS improvements for Turkic languages and Greek
FIXED
Various security fixes
FIXED
GIF animation can gets stuck when src and image size are changed (743598)
FIXED
OS X: nsCocoaWindow::ConstrainPosition uses wrong screen in multi-display setup (752149)
FIXED
CSS :hover regression when an element's class name is set by Javascript (758885)

Known Issues

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
Focus rings keep growing when repeatedly tabbing through elements (see 720987)
Unresolved
Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)