Firefox 3.1 Beta 2 is the fourth development milestone and second beta release of Firefox 3.1, the next version of the Firefox web browser.

New features (for Mac OS X, Linux, and Windows) include:
• Private Browsing Mode
• Faster JavaScript engine
• Improved rendering
• Support for new web technologies

Arnold Kim reports for MacRumors, “But one feature unique to the Mac build is support for Apple’s multi-touch trackpad which has been shipping in notebooks since January of this year.”

Supported gestures are even more robust than Safari’s support and include:
(“Swipe” refers to 3-finger Swipe)

• Swipe Left: Go back in history (hold Cmd to open it in a tab)
• Swipe Right: Go forward in history
• Swipe Up: Go to the top of the page
• Swipe Down: Go to the end of the page
• Pinch Together: Zoom out
• Pinch Apart: Zoom in
• Twist Right: Next tab
• Twist Left: Previous tab

More info in the full article here.

[Thanks to MacDailyNews Reader “IslandGirl” for the heads up.]