Crytek has released not necessarily a trailer for Crysis 3, but a tech demonstration of the engine that will be powering the game, CryEngine 3. The overall world of the game is portrayed in the images seen in the video. There is a plethora of different physics and other protocols at work in CryEngine 3, all of which catapult the characteristics of the graphics to almost photo-realistic levels.
Crysis 3 will be released for the PlayStation 3, Xbox 360, and PC on an unspecified day in February of 2013. The tech demo is available for your viewing pleasure below.