Courtesy of the Official Playstation Blog via Ben Judd, producer of the game, is the start of some news of PSN version exclusives for the game.
He announces that the game will have DualShock 3 support for vibrating and Remote Play via the PSP. There is also one other exclusive that he isn't quite willing to part with this time around. We await with baited breath to see what it is. Maybe they put in online co-op? One can only hope.