14 DAY TRIAL // Firefox 9 has been officially released. The latest update to the popular browser brings several new features and improvements, the biggest of which is a modification to the JavaScript engine that provides a big performance boost of up to 30 percent in some cases.
The latest Firefox uses type inference, a method of determining and setting the type of a JavaScript variable at runtime which leads to less overhead and more efficiently used memory. A more comprehensive explanation as well as some benchmark results are available here.
Mac OS X Lion users get better theme integration and support for two-finger swipe. Firefox 9 also comes with plenty of improvements under the hood including better support for web technologies such as HTML5, MathML and CSS.
Firefox 9 is now available for download on all supported platforms, Windows, Mac OS X, Linux and Android. Current Firefox 8 users will be getting the update in the days to come, as it rolls out gradually.
If you can't wait, you can grab it from the download links above.