This was announced December 23. The old 180+10 was changed to 90+10.
It applies to all Dining, Tour and Recreation activities with the following exceptions:
Grand Gathering Experiences and La Nouba can still be booked 180 days out.
Resort reservations may be made 500 days out (but prices may not be guaranteed).
Any reservations already existing through June 19th will still be honored, but they cannot be modified in any way until they are within the 90 day window.