Disney is changing their reseveration system temporarily while they put in a new one. "IMPORTANT UPDATE: An upgrade to Disney's Dining Reservation System began July 21, 2008. As the application upgrade occurs, the latest reservation date guests will be able to secure is January 25, 2009. This means that in some cases you may not be able to book as far in advance as usual. (Note that reservation booking windows for Victoria & Albert's, Chef Mickey's and Cinderella's Royal Table will not be affected by this system upgrade.) Beginning October 24, 2008, the current system will be replaced by an improved system for dining, recreation and tour bookings. With the launch of the new booking system, reservations for dining, recreation, and tours will be made during one single transaction. Once the upgrade is completed the booking window will expand back to the normal 180 days."
From allears.net