updated 06:25 pm EDT, Tue July 27, 2010
Firefox 4 second beta turns tabs into permanent
Mozilla on Tuesday posted its second beta of Firefox 4. The update brings in a new App Tabs feature that turns tabs into permanent features. Much like Chrome, it collapses the tab to an icon but makes it always available on the left to jump to a favorite page, such as a blogging tool or Internet radio. Mac users now see tabs on top by default where they were strictly optional in the first beta.
The new release is available for Linux, Mac and Windows PCs. Mozilla isn't ready to commit to a launch date for the completed Firefox but usually posts release candidates within weeks of the eventual launch.