Hi there, Amber!
Pricing for the next year at the
Walt Disney World Resort generally comes out around six months before the end of the current year; for example, pricing for 2012 was released in June of 2011.
Since you can book your Resort room 499 days in advance of your arrival date, this means
most (approximately 3/4) of the next year is bookable.
You'll want to keep an eye on the
Disney Parks Blog, as that source generally breaks the freshest information first; other sites to consider are authorized Disney vacation planners, such as Small World Travel and AAA.
What a wonderful countdown to have!
See you later, celebrator,
-Deborah B.