I can’t remember the dates they halted sales/reservations, but the only dates that will be available to be booked initially on the 22nd are the resort stays that were booked by the date Disney halted reservation and ticket sales. The tickets (aside from comps and APs) are date-based themselves, so in essence they will know exactly what days will be booked. They just need to know what park people are choosing on those dates.
That said, I wouldn’t be surprised to see a 60-day rolling window for AP holders.
I must admit I’m surprised there isn’t any apparent incentive or advantage for APs, but I guess that speaks to the overall value they see in APs and their visiting habits vs. guaranteed/planned resort guest revenue.