Whether it's Skyrim DLC or TES:VI remains to be seen.
It takes a lot of time to make a TES game, so if anything this is an add on.
Plus if the next game was about Redguards then it would be called Hammerfell.
There was Oblivion. And Arena. And Redguard. And Battlespire.
Point being, the whole "name the game after a province of the Empire" thing was never really a "thing" except for with Morrowind and Skyrim.
@familyphotoshoot: This is the farthest thing from confirmed. Also already a topic on this:
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