simrook writes "World of Warcraft's next expansion, Wrath of the Lich King, has entered closed alpha testing according to anonymous sources as reported by WoW Insider. World of Warcraft has a player base of over 10 million active subscribers, and is the most successful MMORPG on the market. Wrath of the Lich King, which will follow the previous expanion The Burning Crusade, will raise the level cap to 80, introduce new PvP warfare, new zones, raids, and instances. It is expected to be released in Fall of 2008."
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