World of Warcraft Cataclysm is one of the 3 latest expansions of World of Warcraft video game. It is actually part of the Warcraft Series and was introduced at the 2009 Blizzcon. WOW Cataclysm is being developed by Blizzard Entertainment, Incorporated for Mac OS X and Windows. As soon as it is ready for release, WOW Cataclysm will be published by Activision Blizzard.
World of Warcraft Expansion III Cataclysm trailer also had its debut at Blizzcon 2009. For more info about this MMORPG video game using World of Warcraft engine, read this description of WOW Cataclysm or World of Warcraft: Cataclysm from Wikipedia.
World of Warcraft: Cataclysm is the third expansion set for the massively multiplayer online role-playing game (MMORPG) World of Warcraft, following Wrath of the Lich King. It was announced at BlizzCon 2009 on August 21 2009, though details leaked earlier. It adds a substantial amount of content to the game world, including two new races (Goblins for the Horde, Worgen for the Alliance), new race/class combinations, entirely redesigned zones, flying mounts in Azeroth and guild levelling and achievements. It also raises the level cap to 85.