Ten-Song said:The ODST disc itself is what gives you access. I assume it'll be like Crackdown, in that once the beta goes live, you download it and access it from the ODST campaign disc (which is why they have the extras section there). Pre-ordering ODST gave Sgt. Johnson as a bonus character to play in fire fight.
For the Halo 3 stuff, ALL of Halo 3's multiplayer is on a seperate disc, which includes all the DLC maps and the exclusive ODST ones.
Wait, what? I ordered ODST through Amazon and there was only one disc...