While StarCraft II, an upgraded Battle.Net and World of Warcraft: Cataclysm are all firmly pinned down to 2010 releases, Diablo III, StarCraft II expansion packs and Blizzard's next MMO still show a release date of the "next few years". During a presentation in New York today, Thomas Tippl, Activision Blizzard chief financial officer, raved about the strong business done by Bliizard games. He said the division has a full pipeline of content, which he presented in the slide pictured
here.
While the lineup confirms continued World of Warcraft support and a Starcraft II launch in 2010 (with expansions to follow after), Diablo III was marked to be released in 2011 at the soonest.
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http://kotaku.com/5403098/starcraft-ii-expansions-diablo-iii-coming-in-next-few-years