Blizzard announced the fourth World of Warcraft expansion at BlizzCon - Mists of Pandaria. The expansion will add kung-fu pandas of Warcraft lore, the Pandarens, as a playable race. Pandarens will be playable as either Alliance or Horde. The expansion will also add a new character class, the Monk, to the game. This martial artist class specializes in dealing damage, healing or tanking. The continent of Pandaria, a Warcraft locale inspired by China, will open up for adventurers and the level cap will be raised to 90.
The next expansion will also feature new challenge mode dungeons, PVE scenarios, a pet battle system and a new talent system.
More details when they become available.