Valve has confirmed that Activision's Call of Duty: Modern Warfare 3 will be using Steam. All PC versions of MW3, downloadable or retail, will include Steamworks integration.
Dedicated servers were already confirmed a few weeks ago for the PC, so this announcement didn't really surprise anyone. The Steamworks integration is still good news, as it allows PC gamers to enjoy auto-updates, achievements, friends lists, chat and more.
COD: Modern Warfare 3
Xbox 360, PlayStation 3 and PC. Multiplayer is available on Xbox LIVE (Xbox 360), PSN (PS3) and Steam. Xbox LIVE requires Gold Membership.
Call of Duty: Black Ops 3
Call of Duty: Black Ops 3 is the direct sequel to Black Ops 2. The game features new weapons, perks, scorestreaks, mp maps, and more. You can read more about call of duty bo3 here and get the latest updates. COD: BO3 will be released on the Xbox 360, One, PS3, PS4 and PC.