Firefox's graphics and JavaScript performance should improve with new Mozilla projects. Don't expect results by Firefox 5's June release, though.

Mozilla has released Firefox 18 beta for Windows, Mac, and Linux. New features include faster JavaScript compiling via IonMonkey and Retina Display support.

Mozilla on Tuesday officially launched Firefox 18 for Windows, Mac, Linux, and Android. The improvements include a new JavaScript compiler, preliminary WebRTC as well as Retina support (on Macs).