In the “original” FastPass+ system, guests could only have three FastPass+ entitlements per day, and only at one park.
Under the updated system, once a guest has used their first three FastPass+ entitlements at one of the theme parks they can visit a kiosk at the park and add one additional entitlement. Once that FastPass has been used they can select another, and so on.
The update to the system also allows park hopping guests to add the additional FastPass+ selections at a different park. Park hopping with the FastPass+ system was not available before.
Guests who are using the My Disney Experience app while visiting the parks will not be able to use the app to add the additional FastPass+ entitlements. The additional FastPasses must be obtained by visiting the FastPass+ kiosks located in the theme parks.
The additional FastPasses can also be used on an attraction that a guest has already visited via a FastPass earlier in the day. So if you have a hankering to ride Space Mountain for a second, third, and fourth time in one day you can now use FastPass+ to do it!