Now finally Firefox has updated there browser and now released Firefox 4.0 beta 1,Firefox 4.0 Beta 1 is coming with many new features and it has fixed some bugs, Mozilla is one of the highest web browser and most of people prefer to use it.
The new Firefox Beta 1 is 9 MB in size, but will occupy 52 MB on PC. It comes with a new Add-ons manager as well as JetPack SDK support, which enables users to install plug-ins without restarting the browser. Firefox 4 is a major upgrade from its predecessors, features enhanced HTML5 support, hardware-accelerated HD video and WebSockets.
In the Firefox Beta 1, security improvements have also been added to better hide browsing history that in some circumstances could be retrieved using previous browsers. Firefox 4 also introduces support for out-of-process plugins (OOPP) on OS X for the first time. Mozilla has chosen to support HTML 5 video playback by implementing Google’s WebM video codec.
you can download Firefox 4.0 beta 1 for Windows, Linux and Mac version from below given links.