I lucked out because when I bought this from Best Buy, I received the Officer DLC that was only for pre-orders. Guess it shows that my local BB didn't move too many copies of this one, which is surprisingly considering the franchise's popularity.
Oh, and the Da Vinci DLC is going to be repackaged and included in European versions of the game. No word if the U.S. will get it, but I'm thinking it's unlikely since AC2 didn't get a GOTY edition released stateside.