The next World of Warcraft expansion is called Mists of Pandaria, an expansion pack that includes a new race, level cap, class and talents.
The expansion pack, which was unveiled at Blizzcon 2011, but which wasn't yet dated, will include the new panda-like Pandarens. The expansion takes place on the continent of Pandaria and comes with a new level cap of 90. The expansion also brings with it a new pet battle system, new talent system, Blizzard's Chris Metzen announced today.
Metzen says that both factions can play as the pandas. It's the first time Blizzard has ever tried this.