So encase you don't know what this one is, it is from the guys who did Far Cry (Crytek). The single player of this one looks like it might be well done, and the nano-suit technology the game lets you play with might be a nice little sell point. The graphics are top notch, just have to see about game play.
As for this trailer, looks like they have multiplayer similar to UT's version of BF. Control points and objectives. This could be very interesting, as you watch the video you will see why: http://ve3d.ign.com/videos/16387/PC/Crysis (http://ve3d.ign.com/videos/16387/PC/Crysis)
Either case I can't wait for this one!