Blizzard has made clear after merging with Activision that they intend on making their releases from their largest franchises more common. While the latest titlesfrom the StarCraft and World of Warcraft franchise are set to release in 2010, Blizzard hinted in an SEC filing that they already have plans in the works for expansions to Diablo III when it releases in 2011 psp games.
“Blizzard has released two expansion packs to World of Warcraft; World of Warcraft: The Burning Crusade and World of Warcraft: Wrath of the Lich King,? read the filing [thanks CVG]. “Blizzard is currently developing new games, including a new expansion pack to the World of Warcraft franchise, Cataclysm, StarCraft II: Wings of Liberty, which will be released with the new and improved Battle.net, and sequels to the Diablo franchise.”