Priority Seating/ADRs went from 30 days to 60 days to 90 days to 180 days to 180+10 days. And so it begins. If the message behind FP+ is to "lock it in", it seems to make sense to push this as far back in time as is feasible, as repugnant as that seems to me. "Feasible" probably coincides with the release of park hours and EMH schedules.