The Shivering Isles

Earlier this month, Bethesda announced that a new Oblivion expansion will ship in spring. The package, called the Shivering Isles, will include over thirty hours of new game play. The announcement indicated that a PC version would be distributed by disk, but no mention was made about an Xbox 360 version. Bethesda has now confirmed that the expansion will be available for download over Xbox Live for the Xbox 360.

Bethesda president Vlatko Andonov indicated that the success of previous Oblivion downloads influenced the decision:

The enthusiastic response we've received to our downloadable content has been overwhelming, and we're excited to bring Oblivion fans a full expansion.

[Oblivion expansion to get Xbox Live distribution @ Gamesindustry.biz]

Bethesda plans to release an Oblivion expansion pack called The Shivering Isles this spring, according to GameSpot. The expansion will include more than 30 hours of gameplay in the form of new territories to explore, enemies to conquer, and quests to complete. An entirely new region, called The Isles, will be added to the game. The Isles will be accessible from Cyrodiil using a door that appears in the Niben Bay.

In November, Bethesda released a addon questline called The Knights of the Nine as retail package for PC's and Xbox Live Marketplace download. Although nothing has been confirmed, I don't see anything to stop The Shivering Isles from becoming an Marketplace download as well.