Disney has Just released a sneak peak of the 50th anniversary celebrations coming to Walt Disney World in the video below and they also released this statement announcing more to come on Friday 19th February 2021.
Tune in Friday morning to Good Morning America and the Disney Parks Blog as we share a glimpse of the Walt Disney World Resort 50th Anniversary celebration. 
#DisneyWorld50
In the video you can see a preview of some of the new character costumes coming to the park for the celebration. Furthermore they also preview a look at the Fully Decorated Castle, Spaceship Earth, The Hollywood Tower Hotel and the Tree Of Life.