World Of Warcraft: Cataclysm will be released this year on December 7, Blizzard has announced.
The expansion will be available on PC and Mac at a suggested retail price of US $39.99 - and will also be offered as a digital download from the Blizzard Store.
A special Collector's Edition will also be available exclusively at retail for around $79.99.
"Cataclysm includes the best content we've ever created for World of Warcraft. It's not just an expansion, but a re-creation of much of the original Azeroth, complete with epic new high-level adventures for current players and a redesigned leveling experience for those just starting out," said Mike Morhaime, CEO and cofounder of Blizzard Entertainment.
"With the help of our beta testers, we're putting on the final polish, and we look forward to welcoming gamers around the world to enjoy it in just a couple of months."
Cataclysm sees the return of the corrupted Dragon Aspect Deathwing. In an effort to survive the planet-shattering cataclysm, two new playable races - worgen and goblins - join the struggle between the Alliance and the Horde.