I am pretty sure they could very well be in Korea although this may be pure speculation. Remembered how half of us predicted them to start near Korea for TAR 17?
This is completely speculation, but the only country i could foresee TAR 17 definitely visiting after Korea would be The Phillippines. And it is possible for TAR 17 to travel to Korea if they do 1 leg in Korea, 2 legs in Phillipines, 2 legs in another country further down Southeast Asia (Indonesia, anyone?).. and if they have time, they can even cross continent to Australia and New Zealand. Seems like a pretty good route, to have Asia stuck in the middle of the season instead of the start and the beginning like what we have for the past many seasons.