Valve recently announced that a new entry in the Counter-Strike Series will be coming out soon. Titled Counter-Strike: Global Offensive, the expected release date is in 'early 2012' for Steam (PC and Mac), Playstation Network, and Xbox Live Arcade.
Global Offensive will feature all new maps, characters, and weapons as well as updated content such as 'de_dust' and other fan favorites. Global Offensive will also add new gameplay modes, matchmaking systems, leaderboards, and more unannounced features.