According to 1UP, the offer is exclusive to GameStop, so if you feel like exploring an environment most of the other players won’t, that’s the place you should visit soon. Unfortunately, we can’t tell you if the Palazzo Medici also adds a new mission or something, or it’s just there for the art-lovers. Probably we’ll all see when the game is released, right? And if you simply can’t wait and you want to know for sure that you’ll indeed have some big bonuses, you can always go for the Assassin’s Creed II Collector’s Edition…