The Dark Blade

This info was already "leaked", but Blizzard has officially announced the next expansion to World of Warcraft.

World of Warcraft: Cataclysm announced
World of Warcraft: Cataclysm has just been announced at BlizzCon 2009. The expansion promise to bring about a whole new adventure for World of Warcraft players as they work their way through a destroyed and changed Azeroth.And as Massively announced before, Goblins and Worgen will be the new playable races.
The level cap will be raised to 85, and there will be a whole new swath
of raids, dungeons, and quests for everyone to enjoy. The old world
raid dungeons will be revamped and deliver new heroic opportunities for
players. There is a new secondary skill: Archaeology.UPDATE: Check out Massively's latest coverage:

• Live blog of the playing the new racial starter zones
• The official FAQ page is up
• Live blog of Cataclysm dev panel
• Developer map of new Azeroth map after the Cataclysm
• New race/class combo matrix