Room availability is very fluid. It is not uncommon to have an entire room category appear to be completely booked then find availability a week later. The same goes for the various discounts that are released, certain room categories appear to have no discount, but if you check later on you may find something. I was able to change my room only discount reservation at POFQ from a garden to a standard room almost two months after the discount came out.
I would budget for the room prices that are available now and be happy if I found something that was less expensive.