Valve has announced that Call of Duty 4: Modern Warfare, the first person sequel developed by Infinity Ward, will be available via Steam next week. Beginning today, gamers may pre-purchase the game and begin the playing the moment it's made available on November 12.
In related news, ClickandBuy announced an agreement with Valve to offer the ClickandBuy e-payment method for purchases via Steam (press 'read more' for details).