This is what I love, information from a castmember that is complete and correct
As others have pointed out, you can make reservations 499 days out (departure) on the phone (no web ressies), but the rate quoted when you make said reservation is not guaranteed. Disney releases rates once a year, usually in the July/August time frame. Once the rares are released, your reservation will be adjusted to the new rate.
So, as you can see the reservations CM was correct, you can't get a reservation with a 2010 rate until July - but by then all the sites may be booked by folks who don;t care what it costs.