If you choose to pre-order Left 4 Dead 2, you get a gift. If you want to call it that. Because early purchasers will get early access to the game’s demo.
While a multiplayer demo will be released for everyone on both 360 and PC, anyone preordering the 360 version or pre-purchasing the PC version over Steam will get in early.
No word on when those early demo will start coming. My bet is sometime before November. Considering that’s when the game drops.