I don’t think either will be the end biome. I suspect Ashlands before the North, though only because there’s already some assets there. I suspect the final boss we will face, will be the boss of the Ocean biome!

They said in their AMA that there will be 9 bosses, one for each biome, and that all biomes are in the game already. We have the bosses for the Meadows, Forest, Swamp, Mountains, and Planes. That just leaves the Mistlands, the Ashlands, the Deep North, and the Ocean. Could be the leviathan we’ve been mining barnacles from may show it’s head, and be angry O.O