Well to quote the last paragraph of book 28 (The Hunger of Sejanoz)
"Congratulations, Grand Master. Your victory is total. You have rid this continent and its people of a cruel tyrant who has threatened their peaceful existence for many centuries, and your triumph is set to become legend. In future times the chronicle will tell of other quests that you undertook on the road to becoming a Kai Supreme Master. Until the time comes for their telling, may the gods Ishir and Kai watch over you."
The highest rank you can have achieved in the New Order books so far is Grand Thane, so there's still a few books before that Grand Master becomes a Kai Supreme Master; Also as we know, Lone Wolf is just a bit too hardcore to be a playable character anymore, so I'd put my money on 29+ being the previously untold New Order tales
