Halo 3 to Have 4-Player Co-Op

The guys over at TeamXbox have stumbled across some interesting code in the Halo 3 beta. While going through all of the text in the party menus, they came across a strange message:
The game cannot start because all players are set to observer. Too many players for splitscreen. Only 2 players may play splitscreen coop on the same Xbox 360 console. The party size is too large to start the game. Up to 4 players may play coop on Xbox Live or System Link. Loading information from Xbox Live










