Hammerfell ! We havent seen it since Daggerfall... Its time to go back.

Future TES location ideas should go http://www.gamesas.com/topic/1419943-tes-vi-location-and-setting-official-speculation-thread-4/.

Hammerfell is too large for a DLC, it would need a separate game - this is very unlikely as we've already been there and there are still four unexplored provinces.

Yep, thanks for the link Rosveen