根据Mozilla的产品发布计划，Firefox 8今天也进入了Beta 5公开测试阶段。Firefox 8 Beta 5面向Windows、Mac、Linux同时推出，新增了不少新功能，对用户界面也进行了完善。
下载:Mozilla Firefox 8.0 Beta 5
The latest version of Firefox Beta has the following changes:
Add-ons installed by third party programs are now disabled by default
Added a one-time add-on selection dialog to manage previously installed add-ons
Added Twitter to the search bar
Added a preference to load tabs on demand, improving start-up time when windows are restored
Improved tab animations when moving, reordering, or detaching tabs
Improved performance and memory handling when using
