Looks like it pays to be a PS3 faithful if you ordered your copy of “Assassin’s Creed Brotherhood” for your PS3. Ubisoft will be making available a free, PS3-exclusive DLC called “Copernicus Conspiracy” on the release day. The DLC will be packed with extra missions for Ezio and has been made part of the storyline revolving around Nicolaus Copernicus.
It’s a pity that all my Assassin’s Creed achievements are on my Xbox because I love free stuff! But I’m sure it will be made available on Xbox LIVE eventually.
Source: Playstation Blog