I just saw this on Allearsnet.com:
[B] Effective immediately, the booking window for Walt Disney World dining, recreation and tours will be 90 days, instead of 180 days. [/B]
All existing reservations will be honored as booked.
Disney Resort Hotel Guests are now able to book 90 days prior to their scheduled check-in date for the first 10 days of their stay. Day guests can book 90 days before the date they wish to dine. (Guests of the Swan and Dolphin, Shades of Green, Downtown Disney Area Hotels and Good Neighbor Hotels are not eligible for this benefit.)
Grand Gathering experiences and La Nouba reservations can still be made up to 180 days in advance.