The Epcot monorail line hasn't operated since the mid-March 2020 closure of Disney World at the start of the COVID-19 pandemic.
The 2021 event will be called Disney's Very Merriest After Hours.
The announcement comes off after months of relative silence about new offerings for Disney World's 50th birthday.
Construction galore in Epcot as crews work on two new attractions and a new nighttime show.
The Buzzy theft at Walt Disney World remains unsolved, two and a half years after the animatronic was stolen.
The new Creations Shop will unseat Mouse Gear as Epcot's top merchandise location.
Construction walls continue to dominate Future World in this update on ongoing Epcot projects.
Disney CEO Bob Chapek said the resort will need time to call back and retrain thousands of Disneyland employees.
Each Disney World theme park has now passed at least two COVID-19 inspections from Orange County "strike teams."