Electronic Arts has announced that Ultima Online: Stygian Abyss, the eighth expansion to one of the longest-running MMORPGs in the genre's history, is slated for release on September 8th. Players will find expansive new areas to explore, including Ter Mur, the Gargoyle homeland, and the Stygian Abyss dungeon itself - the largest dungeon area ever introduced to Ultima Online. The dungeon will contain new boss monsters of unparalleled difficulty including the Medusa, Primeval Lich and the Stygian Dragon, as well as Player vs. Player zones where adventurers will be turned against each other.