Mozilla  Firefox 9.0正式版已经出现在Mozilla的服务器上，据国外媒体的基准测试，JS性能提升了20-30%。需要的童鞋赶紧下载吧。
Changelog:

- Added support for font-stretch
- Added support for querying Do Not Track status via JavaScript
- Added two finger swipe navigation for Mac OS X Lion
- Added Type Inference, significantly improving JavaScript performance
- Fixed several stability issues
- Improved standards support for HTML5, MathML, and CSS
- Improved support for text-overflow
- Improved theme integration for Mac OS X Lion

下载:Mozilla Firefox 9.0 正式版