Nmap 4.00 released
After two years since the last major update, Insecure.org has released Nmap 4.00. It includes quite a few significant changes, so you might want to check out the changelog.
Update: Josiah pointed out the most important new feature in Nmap 4… “Nmap now wishes itself a happy birthday when run on September 1 in verbose mode! The first public release was on that date in 1997.” Heh!