Hi Karen,
Thanks for the great question. Our family will be visiting in May as well for Star Wars Weekends, so I've been eagerly awaiting announcements of special events for the 25th anniversary of Hollywood Studios. While they haven't made any official announcements other than the dates for Star Wars Weekends, be sure to check out
Disney Parks Blog for updates. They have the latest news for special events, new attractions and exciting developments at all of the Disney Parks.
I think it would be safe to say that Walt Disney World will be planning something pretty magical to celebrate, so book that visit and get ready for the fun!
I hope this answered your question, Karen. If you have any other questions before your vacation, please feel free to ask us at any time.
Have a fantastical Disney day!