UBS said it now expects the parks to open Jan. 1 at 50% capacity for the first six months and 75% capacity for the remaining six months of 2021, according to analyst John Hodulik.
Walt Disney World is currently closed "until further notice", and Disney are doing all they can and following official health advice on how it can open as quickly and safely as possible. Although Disney appeared to be aiming for a steady reopening starting June 1st because they're taking new bookings and accepting restaurant reservations from that date, recent modelling shows it might not be until mid-June when things can start opening up in the state of Florida.
One thing to keep in mind, is that when the parks open, it won't be business as usual, and likely won't be until there is a vaccine or the infection spread is greatly reduced.
Stay optimistic, and stay home.