Prototype 2 was the first to get a date, with the distant April 24th, 2012 being the target.
Next up was Silicon Knights' X-Men Destiny, a game that, admittedly, we've seen very little of. That game's scored a September 27th release date.
Finally, Activision attached an October 4th release date to the upcoming Spider-Man: Edge Of Time. Unfortunately, Beenox's sophomore Spidey title is without all that cool Mirror's Edge nonsense from the new movie trailer. Oh well.