Go to the disneyland.com site and click on annual passholders. Register (you have to enter your ap card number) and then you can check the ap updates, look at the rates on the calendar, and so forth. It's very cool!
We stayed at GCH in Oct for $249 standard, I'm going this Friday and staying at DLH for $149 standard, and I'm going again in Feb. to DLH, staying concierge for $279.
There is always an ap discount, but the best ap discounts are in the fall and I'm not sure what other times. This year, the good fall rates were extended into Feb. Since the economy is affecting travel, I think it's possible they'll have more ap deals this year.