Data from hoyoapp, just noticed that nod krai total exploration is only at 35%?? I thought it was only supposed to be an in-between region, and we haven't had any references to other regions during quests as far as I can tell.

Im caught up on the archon quests, so not much left.
Im really surprised we will still almost triple in size of the map based on this. First time im actually caught up with quests and waiting for a new region to open .
How big will nod krai still get, if total exploration progress is only at 35%?