UPDATE 7/7/17: This refurbishment has been postponed. There is no estimated date on when it will take place now, but we'll keep you informed when we know.
Beginning July 11 and going through August 17, the Magic Kingdom First Aid location on Main Street, U.S.A. will undergo a refurbishment. First Aid will be temporarily relocated to Tomorrowland. The temporary location will be adjacent to the entrance of Space Mountain. Magic Kingdom Park maps, Times Guides, and the My Disney Experience app will all be updated to reflect this change. The Baby Care Center will not be affected. Source: Disney