EA announced today that a single-player demo of Crysis is coming on the 25th of September. 

The Countdown to Crysis Continues:
 Single Player Demo - 9.25.07

    PC gamers now have a reason to mark a big circle around September 25th on their calendars as the single player demo for Crysis will be lighting up rigs worldwide in just 30 days.

    Consisting of the entire first level in Crysis’ epic single player campaign, “Contact,” gamers will get to finally experience first-hand the stunning visuals, revolutionary Nanosuit gameplay and open-ended level design that make Crysis one of the most anticipated shooters and PC games of all time. The demo is also poised to include a huge surprise from Crytek, but for now you’ll just have to wait.