Damn, will you guys chill the feck out. A bunch of whiners, pissers and moaners I swear. "Ohhh boo hoo the demo should be available to everyone on 2/5 - boo hoo". I think its a perfect logical sense that those who pre-ordered; get somewhat of a "Thank you for pre-ordering" gig by gaining early access to the demo. Makes perfect logical sense.
Be lucky that there's even a demo coming AT ALL if you are still in doubt about the game.