The Celebrate the Magic projection show that takes place on Cinderella Castle nightly at the Magic Kingdom is rumored to be replaced soon.
The recent projection system upgrades that took place late in the Summer and some work surrounding the Castle point to the show’s replacement. Note that this replacement would be another projection-only show, not a replacement for the larger Wishes! nighttime spectacular, which is still heavily rumored as well.
We expect an announcement from Disney very soon on this change.