We do plan to add additional areas later on. However, we will only do so when the playerbase is large enough that we feel we can support two separate areas. The most likely area to be opened next is Dorne (specifically, Sunspear). Following that, we would probably look at suitable locations in the areas bordering on the King’s Landing region, such as Storm’s End. We may also consider another city, in that case Oldtown.
The North (including the Wall) and the Iron Isles will never be featured on the game.