Blizzard Entertainment shared with Blizzplanet and other fansites an image teaser announcing "The Thunder King is risen."
A new raid dungeon featuring The Thunder King will be opened on January 2013 with Patch 5.2 which adds access to The Thunder Isle.
The isle is currently inaccessible in live realms. It's the big isle north of Townlong Steppes in the Pandaria continent.
The storyline about the resurrection of the Thunder King, a powerful mogu emperor, is experienced by players during the quests at the Zouchin Village in Kun-Lai Summit.
The Zandalari trolls resurrect The Thunder King to bring about a new age of fear and terror upon the world of Azeroth.
Blizzard Entertainment has announced the opening of beta registrations for “World of Warcraft: The War Within,” inviting players to explore new subterranean worlds beneath Azeroth.
Danish from eXputer: "Despite Blizzard's attempt to give a fresh new spin to World of Warcraft, some fans still seem to be stuck in the past."
HG writes: "Blizzard is usually pretty bad at keeping secrets, but the company somehow managed to keep this one under wraps until now. Plunderstorm is a special limited-time event that’s basically World of Warcraft’s take on the Battle Royale genre."