Yes. very likely especially if people start canceling AND wdw let's the discount apply to the canceled room inventory. That's why I haven't canceled my existing and just hope I could catch it however many minutes later. There is no way I am going to pay rack rate for a 9 night stay deluxe. Not happening. Never done it and never will. I've always had a bounce back, AP rate, or UOC or even the GP offer a few times. It is just a matter of when do I cancel since room only. I imagine I will wait until the absolute last minute once airfare are too high.
Our May 2016 trip I wanted to add nights and there was NEVER any availability. The week before a ton opened up. Just a matter of it all aligning - airfare, resort, and I guess dining and FPs too.