Mozilla just released the first official beta version of Firefox 3.6 and is now available for download. This beta version is built on Gecko 1.9.2 web rendering engine and is said to have many improvements for web developers.
As per Firefox’s Official Blog, this first official beta version (Firefox 3.6.1) is said to have the following new features:
If you are one of the early beta-testers, you can get a copy of 3.6.1 at the Firefox Beta Page (available for Linux, Windows & MAC). As this is a beta/pre-release version, you may encounter problems while browsing. If you do, you can report it to Firefox by submitting a Bug Report.