It uses Steamworks which keeps it locked until the official release date, that being "11.10.09" affirms Bowling. Still, you can look at it.
"If you bought a retail copy on PC, you can play it on 11.10.09," Bowling. That's right, you may have bought the game but it's not yours yet. Gives you plenty of time to read that manual though, which is often only disturbed in situations like this.