I highly doubt there will be more dlc for COD4.Frankly,COD4 was a "console" game.Infinity Ward rejected the PC community.Treyarch,although they had a buggy game,aleast talked to the PC community.And MW2 will just be like COD4 since again they are ignoring the PC community.I say that because the Prestige edition is console only and not being released for PC.