I'm pretty sure the 175s from CP are included in the 120 frames. What WAS grandfathered were their higher gross weight, which exceeds the gross weight in the scope provisions. If I understand correctly, the number of frames however, are apart of the 120.

All this talk of new planes for XJ are planes that were already being operated or were scheduled to be operated at current DCI carriers. 14 from freedom and 14 from Comair. If you take the 14 from Freedom and the last delivery to Comair and put them at XJ, there is no gain in 900 frames from previous announcements, just new operators. It does however, still put us slightly over the 120.

My prediction is that either they'll go right up to the 120 cap and the balance will be delivered with 70 seats in them (like Skywest before the scope relaxation to 76 seats) or they're planning on net gains at mainline, which will allow increased numbers of 76 seaters at DCI.