Final Fantasy XIwill be getting its Heroes of Abyssea update this December. Assuming all goes well, the Heroes of Abyssea site sets the release date for Monday, December 6th. There are three monsters leading up the Heroes of Abyssea content: Orthrus, Alfard and Khrysokhimaira. Only one of which has a single head. While you wait for the new content, check out the add-on's latest trailer.
Heroes of Abyssea is available for pre-order for $9.99 on Playstation 2, PC and Xbox 360.