I'm planning on handling the differences between the Shontu and Humittes differently in Bronze Age Tribes than previously.
While previously the Humittes and Shontu were (in game terms) entirely different "races", in Tribes cultures will be a more mutable concept. The Shontu and Humittes will both be of the Atlantean race (as are all humans), but with different cultural traits. The shontu won't be coming for awhile, though.