Assassin’s Creed 2 – no confirmed release date yet
At this point according to Joystiq.com Assassin's Creed 2 is slated for release at the end of 2009. Below are some Youtube videos and the Official Assassin's Creed 2 website as well, which currently shows a video trailer.
Assassin's Creed 2 story trailer
Assassin's Creed 2
