It says Existing bookings. Which my cruise still exists and they haven't canceled it yet... worth a shot I guess.
Existing bookings and new bookings made May 6, 2020 through August 1, 2020, are eligible to be rescheduled to the following cruise year at the initial price and/or promotion when selecting an alternative sailing of the same itinerary type, ship class, stateroom category, and voyage length within four weeks of the original sail date. Only guests originally booked on a Holiday sailing may move to a Holiday sailing the following year. The decision to adjust a current booking to the following cruise year must be made by August 1, 2020. If rescheduling within the penalty period of the original sailing date, penalties will be carried over to the new booking should the new booking be canceled later. You may only reschedule a sailing once.