You are welcome, Ray.
At some point they will drop (or extend) the max booking/park reservation date of 9/26/21 and if they resume the usual 500 day window (or extend beyond 10/31/21), you need to be online or on the phone in the first few hours of when that booking becomes available that first day because October, particularly the weekends and Halloween, will go fast. As I said, Halloween is already inside of 500 days from today.
Last year they released next year rates earlier in June and changed the 500 day reservation rule from 500 days from check-out to 500 days from arrival/check-in. Disney didn't announce that change, the just implemented it. Once word got out the inventory got all reserved and folks who didn't note the change got left out or looking for cancellations.
Bama Ed
PS - 500 days out from today, June 28, 2020 gives a max arrival window of November 10, 2021.