Here is the update on the Walt Disney World website.
Beginning January 9, 2024, Guests with a ticket with Park Hopper benefits or an Annual Pass will be able to visit another theme park at any time of day during park hours (subject to capacity limitations).
On days when theme park reservations are required for Annual Passholders and on certain non-dated tickets, Passholders and their Guests will be able to take advantage of the updated Park Hopper policies after visiting their first park.
Beginning January 9, 2024, Guests with a ticket with Park Hopper benefits or an Annual Pass will be able to visit another theme park at any time of day during park hours (subject to capacity limitations).
On days when theme park reservations are required for Annual Passholders and on certain non-dated tickets, Passholders and their Guests will be able to take advantage of the updated Park Hopper policies after visiting their first park.