News: 'Shivering Isles' First True Oblivion Expansion?

The first 'proper' expansion for The Elderscrolls IV: Oblivion has been unofficially announced on the game's official forum. Apparently, rather than expand into another province of Tamriel- gamers will be transported to the 'Shivering Isles' otherwise known as 'The Realm of Madness' via a secret enterance. Although not officially announced by Bethesda themselves just yet- it sounds probable that it soon will be. Here's the story in full.