Bethesda Softworks is making a full expansion to Elder Scrolls IV: Oblivion, according to Finnish gaming magazine Pelit. The release date and further details of the Shivering Isles expansion are currently unknown.
ZeniMax Media Inc., owner of Bethesda, has trademarked the name ”Shivering Isles” in August with U.S. Patent and Trademark office, which adds credibility to these expansion rumors. The Official Xbox Magazine also ran a rumor of the expansion in its latest edition.