At the Sony Press Conference at E3 I seem to remember Ubisoft mentioning something about exclusive Assassin's Creed III exclusive content for the PlayStation 3 — but I fully expected it to be like, a golden Tomahawk or something ridiculous. But if new box art from Amazon is to be believed, it looks as though PS3 owners will be privvy to an extra 60 minutes of gameplay content.
It could be something as simple as a couple of extra missions, but we don't expect it to be anything important in the grand scheme of the game itself. That said, I'm not really a fan of this kind of thing. I like the idea of a piece of art being a more fixed static thing — not something that gets messed around with pre-order bonuses and platform exclusive content.
When was the last time you got an extra 10 minutes of a movie because you watched it at Event Cinemas instead of Reading.
Alright, that analogy doesn't really stand up, but point being — I'm not a massive fan of these kinds of shenanigans. That said, I wouldn't be surprised if this was some sort of timed exclusive.