According to inside sources, most annual pass types for Walt Disney World be restoring a 20% merchandise discount.
The discount should go back into effect tomorrow, October 1st, 2016.
This discount was offered several years ago, but was reduced to just 10% a few years back. Disneyland Resort provides most annual passholders a 20% merchandise discount already.
Disney has yet to confirm the change, so it is just a rumor as of right now.