User blog comment:Kacj321/Entire Tamriel Landmass built into Skyrim/@comment-4598195-20111122220603

Most probably for an expansion. There have been expansions for all the Elder Scrolls so far so I'm guessing they aren't going to stop at Skyrim. I also like how Bethesda is one of the only game companies that makes proper big expansions not a lot of tiny DLCs like most games do nowadays.

Also this extra land helps for mods :D