Bethesda has released some new content for their top selling game, adding a new faction with some new quests, a few extras enemies, and some new items. The Elders Scrolls: Oblivion - Knights of the Nine costs $9.99, a little more than Bethesda's previous content releases, and can be downloaded in multiple languages from here.
"A fallen King has been unchained from the darkness of Oblivion to seek vengeance upon the Gods who banished him. Only a champion pure of heart can vanquish the evil that has been released upon the land. You must heed the call, reclaim the lost relics of the Divine Crusader, and return the Nine to glory. New dungeons, characters, quests, and mysteries await."