Squad deathmatch pits 4 squads of 4 against one another in the hunt for 50 kills. It's as simple as that. Check out the trailer below as Bad Company 2 Producer, Patrick Back, runs us through it.
The two previously announced multiplayer modes include "Conquest" and "Rush" from Bad Company 1. The fourth is still a mystery.
http://www.youtube.com/watch?v=B6uFU8utiaA&feature=player_embedded
I loved BFBC and I can't wait for BFBC 2, and when I heard this I was stocked so I figured I would share.