I'd say there are pretty strong indicators of how it is for their process when we get whole families of aircraft, Spits, 109s, 190s, F4Us, 47s, ect, updated at the same time. When they were doing the Spits and hadn't shown the Spit VIII in screen shots on the front page (which they never did) I called Pyro and chatted with him for a bit. He told me at the time that they wanted to do the Spit VIII, but weren't sure they'd have time, yet they did manage to find the time. All Spits, Mk I, V, IX, XIV and Seafire were updated and the VIII and XVI added in the same patch. I don't recall for sure, but I am not certain the Bf109s weren't all updated in the same patch, with the G-14 being added.