Firefox 9正式版发布

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%。

详细改进记录包括：

- 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

下载地址：Mozilla Firefox 9.0 正式版

下图是一些性能指标的测试：