At this time, Crytek & EA are glad to confirm that we'll be releasing a pre-launch Crysis 2 multiplayer demo on PC! Stay tuned for details.
The 360 demo was released through Xbox Live on January 25, 2011. It features two games modes and one map from the full game. Hopefully the PC demo will have the same level of content, if not more. There is no news (yet?) regarding a PlayStation 3 demo.
The game will see a multi-platform release on March 22, 2011 in the United States and March 25, 2011 in Europe. Crytek has said that the game has the best graphics you've ever seen but that it will be graphically superior on the PC.