Today Walt Disney World Resort announced that starting in the next few months all Walt Disney World Annual Passholders will no longer need to make park reservations if they plan on visiting the parks after 2 PM.
The only exception to this is that on Saturdays & Sundays, Passholders will need park reservations to go to Magic Kingdom park no matter what time of the day they arrive at the park. Pass blockout dates will continue to apply like they do today.
Walt Disney World has said that they will share a date with passholders soon.