A few days ago, the BackTrack 2.0 bootable Linux distribution was released.  For the uninitiated, BackTrack is a very powerful collection of penetration testing and security-related tools, all pulled together and integrated into a fantastic bootable Linux CD package, freely downloadable as an ISO image.

The new update is very well done, including Metasploit 2 and 3, better wireless support, and much more.  You can learn more about it here.