There would be no difference between the development reqs. for the PS4 client and the DX11 client and they would both require the same team members from the Dev Team to complete. I think it's pretty unrealistic to think they could put together 2.2, build the PS4 client AND build the DX11 client at the same time. Given the way Yoshi described their development system it's likely the 2.2 Team is also/overlaps with the PS4 client team and they'll hand off to the live release team and move on to DX11/2.3. Their setup is three teams but I can't remember the breakdown. Major Patch/Minor Patching/Current Build?