They are very hard to come by. You would be better off watching for the general public discount because the AP discount wasn't really any better than the GP discount this year. Everytime time I looked the Epcot resorts were unavailable for the AP discount. And since the gp discount comes out first, you have a better chance at getting it. We booked the gp discount for the YC back in May and those discounted rooms at both BC and YC have been gone for months now.
Hmm, I booked through a TA so I hope she'll be on top of it.