User blog comment:Zelron/The Elder Scrolls V: Dragonborn rumors (Imbedded deep the secrets sleep)/@comment-5380212-20121018030449/@comment-3492791-20121018150605

Your right. What it should have been called was:

The Elder Scrolls V: Skyrim and also sovngarde and parts of High rock and Oblivion.

Clearly we want to make sure that we say exactly where the game takes place and leave no room for creativity later. That why The Elder Scrolls IV: Oblivion did have any section of the game take place on Mundus.