Mozilla releases Firefox 9

The big news with Firefox 9: added support for “type inference” for Javascript code. Put simply, this technology speeds up any website that uses Javascript.

Other changes are more minor, although OS X Lion users — who saw major improvements in compatibility with version 8 -benefit again, this time with added support for two-finger swipe navigation and improved theme support.

Other changes simply involve adding and improving support for web standards, including CSS3 and HTML5, building on previous releases. There are also a number of stability bug fixes.