Bethesda Softworks confirmed recently that Shivering Isles
expansion for Oblivion
will indeed take advantage of the extra 250 achievement points for the Xbox 360. In addition, a new technology will be added to bring the graphics of the game up to the level of the PS3, making the two version almost identicaly graphically.
The Shivering Isles expansion for Xbox 360 is due for a spring release via Xbox Live Marketplace.