The Metasploit Project has just officially released version 3.0 of the framework on their website.  3.0 is a complete rewrite of the framwork and is written in Ruby.  It currently contains 177 exploits, 104 payloads, 17 encoders, and 3 nop modules.  It is a fantastic tool for penetration testing, and best of all -- it's completely free.

Read their blog entry on the new of the 3.0 release here

And get yourself a copy of Metasploit 3.0 over here

Enjoy!

Shawn