Hi!
I wish I could help, but unfortunately, I don't have a concrete answer for you! While discounts for most 2011 have been released, and can be accessed on the
Special Offers page, they do not cover the time frame you're interested in.
A great resource for past discounts at Walt Disney World is a web site called MouseSavers. This site hosts a chart of past discounts, when they became available, and any restrictions. To locate it, I usually search for "historical discounts".
Also, its important to note that Walt Disney World is great at applying newly released discounts to existing reservations. If you'd prefer to book your vacation now, you can keep an eye on the Special Offers page and call Disney (or your travel agent) when the discounts become available. If the resort and room category you've booked is available with the discount, you will most likely be able to apply it without a problem. Often, you'll even be able to switch resorts to take advantage of the discount if you're unable to apply it at your original resort.
Hope this helps a little!