Today, 8 months after the Drupal 4.7 release, we released Drupal 5.0 to the world. Drupal 4.0 was released in 2002 so it took us a few year to feel confident to increase the major version number from 4 to 5. Needless to say, Drupal 5 is our most exciting release to date. Read more about Drupal 5.0 in the official release announcement or just look at the "what is new in Drupal 5.0?" screencast (13 Mb, 10 min, mp4) that we prepared. Rock on, Drupal community!
— Dries Buytaert