TOMORROW!!!
Just kidding, please don't hate me. While no one here really knows when/if they will release BRP for those dates, historically WDW will release discounted rates anywhere from 1-4 months in advance. I would expect that if they are going to offer BRP for those dates, probably won't know until January at the earliest. As mentioned above, they may not "need" to offer discounts, and if they do, they will probably be limited more so than other times of the year.
Here's to hoping that it works in your favor!