Talking with the UK branch of PC Gamer, Crytek CEO Cevat Yerli said that Crysis could indeed come to the PlayStation 3, but that they aren't working on it at the moment. According to Cevat, the port would require optimization and extra work, and that's why they're not doing a console port at the moment. He goes on, "What you would not do is make Crysis on PS3, 360 and PC for a single shipping date, because we would lose the quality focus."
So Crytek is looking for PS3 developers and they've finally admitted officially that Crysis could run on the PlayStation 3. Seems like a pretty good indication that we will (someday) be playing Crysis on the PS3, but don't plan on it anytime soon. Killzone 3 will probably be out first ...