Mozilla team has released Firefox 9 Beta 5, Following were the new things in it :-
- Added Type Inference, significantly improving JavaScript performance
- Improved theme integration for Mac OS X Lion
- Added two finger swipe navigation for Mac OS X Lion
- Added support for querying Do Not Track status via JavaScript
- Added support for font-stretch
- Improved support for text-overflow
- Improved standards support for HTML5, MathML, and CSS
- Fixed several stability issues
it is suppose to be firefox 11 beta 5