Update: Firefox final 3.0 has been released for Windows, Linux and Mac OS X. Grab it while it is hot!
Check out more Firefox 3.0 pictures here
If you like Firefox and cutting edge software, this is a must for you.
The development name for Mozilla Firefox 3 is Gran Paradiso (a national park in Italy). Firefox version 3.0 alpha released on December 8, 2006 (final version will be release later in May 2007)
Firefox 3 will also include several new features and some that were bumped from Firefox 2, such as the overhauled Places system for storing bookmarks and history in an SQLLite database.
Do not install this on production system. This software is useful if you are a developer or testing out software to find out bugs.