Check out "What’s New" and "Known Issues" for this version of Firefox below. As always, you’re encouraged to tell them what you think, or file a bug in Bugzilla.
What’s New
- NEW
Mac OS X 10.8: Support for Notification Center
- CHANGED
Updated Awesome Bar experience with larger icons
- DEVELOPER
JavaScript Maps and Sets are now iterable
- DEVELOPER
SVG FillPaint and StrokePaint implemented
- DEVELOPER
Support for @supports added
- DEVELOPER
Improvements that make the Web Console, Debugger and Developer Toolbar faster and easier to use
- DEVELOPER
New Markup panel in the Page Inspector allows easy editing of the DOM
- HTML5
Sandbox attribute for iframes implemented, enabling increased security
- FIXED
Over twenty performance improvements, including fixes around the New Tab page
- FIXED
Page scrolling on sites with fixed headers (see 780345)
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
Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)
- Unresolved
Pointer lock doesn't work in web apps (see 769150)