Multiplayer Beta is out! Only certain users can get it, though (not sure what the specifications are). Although, if you know someone with the beta (Me) and you trust them, give them your Xbox live GamerTag, email address and password. I can download it in your account and then you redownload your gamertag, go to your download history and downlod the beta. If you don't trust me, fair enough.
Also, the demo is really good. The atmosphere is far more intense than in the previous CoDs, and joining games is so easy. You can reach up to Rank 11 in the demo, allowing you to create your own class and all sorts of amazing stuff. If the final product is nearly as good as this, it'll make up for the disappointing CoD4.
...'scuse me while I go play CoD4.