Other highlights of the release include Mac OS X Lion support, with Firefox for OS X now featuring a two-finger swipe gesture for navigating between websites. Also new for the Mac version is an enhanced Lion-friendly user interface, which also makes surfing the web with multiple monitors more straightforward.
Android users will also see an update to the browser’s mobile edition, with the latest release taking advantage of tablets and their increased screen size. The browser has now been optimized for tablet devices, with support for swiping, a tablet-friendly UI and new HTML5 form validation.
Source & Image: Mozilla Blog