[alandjen]

We called about a trip next Easter. You can reserve your date and put down your $200 reservation. They'll quote you a price that is a certain percentage above whatever the rack rate was for that room/week this year, and your price will be adjusted to the 2010 rates when they come out in early August.

Presumably the quote you'll be given will be high, because they'd rather tell you the final cost is lower than they quoted than higher.

Note, you probably have to call to get this done, I don't think the server online will let you book for next year before the prices have come out.