According to the In-Crysis, Crytek Studios has delayed the Crysis singleplayer demo.

The demo had been planed for September 25th, but Crytek wants to focus on finishing the full game, so the singleplayer demo is pushed to October 26th. Crysis single-player demo will feature the Sandbox 2 Editor so we can be ready for it when the full game launches.

The release date for the full game is still November 16th.