Mozilla's rapid release schedule rolls on with Firefox 9 now available on Mozilla's servers ahead of its official launch. The final build is ready to download right now if you do not want to wait for the automatic update to arrive.
JavaScript Performance Takes Centre Stage
There are no visual changes to speak of in Firefox 9 and the UI remains identical to the previous version. The main focus of this release is JavaScript performance, which Mozilla claims has been improved by as much as 20 to 30 percent. If you spend time on modern websites that rely heavily on JavaScript, that improvement should be noticeable in day-to-day use.
OS X Lion Gestures for Mac Users
Mac users get something extra in this release. Firefox 9 adopts the gesture-based navigation features introduced in OS X Lion, bringing swipe gestures to your browsing experience in a way that feels native to the platform. It is a small but welcome touch for anyone on a MacBook or Magic Trackpad.
Download Firefox 9