Digital Spy reports that World of Warcraft designer Greg Street said that Blizzard Entertainment wants to release annual expansions. There have been four major updates since it was released in 2004. 

Street said: "We find that expansions are what bring players back to World of Warcraft. Really good patches will keep them, but they aren't as good at bringing players back to the game. We really want to get to a cadence where we can release expansions more quickly. Once a year I think would be a good rate. I think the best thing we can do for new players is to keep coming out with regular content updates."

Blizzard announced the fifth expansion pack during BlizzCon 2013 earlier this month. It is called Warlords of Draenor and features garrison building and a level cap of 100. There is no release date yet. 

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