So the gameinformer exclusive has been leaked, apparently in Bioshock 2 you will be playing as a Big Daddy? Saving Little Sisters and escaping the nefarious machinations of the "Big Sister"?
It will be badass to use the drill I guess, but it seems like a weird turn for the game. I'm sure it will turn out great, though.
http://allgamesbeta.net/2009/03/16/bioshock-2-game-informer/