Crysis and Crysis Warhead where PC exclusive, but now its almost like Xbox is getting it all...
Seems weird to me since the reall Crysis Fans all got PC's, but did we see a Beta or a Demo anouncment?
I didnt even see any system specs yet also.
Also the controles (from what i could find out) are not really suitable for PC but really intended for Gamepads... nice

As Sahdev said, controls are likely going to be the same as the first Crysis. Don't forget PC game controls are pretty much always customizable (more customizable than console games).
We're getting closer to the date and more information is bound to be released. Maybe they pushed for an xbox exclusive demo because PC gamers already know what to expect. I don't know, but either way the game is being released for everyone on the same day! If you want to know how the game is read reviews. We're not that far away from release now.