What leak? And they would have mentioned it in the GI article if it was taking place there in addition to SKyrim
An "ex developer" last august leaked a bunch of information on the new elderscrolls game before it was even announced and everything he's said has so far been completely true (new combat system, skyrim, in-house engine, etc)
One of the other things he mentioned was it also takes place in part of High Rock.
Who knows it could all be fake - but fact of the matter is this post has been accurate on everything revealed so far.