I was just looking at the Mouse Savers historical data and it appears May discounts normally come out sometime between late November and early January.
Hope this helps. I'm on the lookout for a May 2014 discount too!
Save Up to 30% on Rooms at Walt Disney World!
Save up to 30% on rooms at select Disney Resorts Collection hotels when you stay 5 consecutive nights or longer in late summer and early fall. Plus, enjoy other savings for shorter stays.This offer is valid for stays most nights from August 1 to October 11, 2025.
CLICK HERE