Perhaps Universal is just ceding 2020 to Disney, and planning to live off the overflow from all the WDW stuff. Kind of similar to how WDW was able to feed off the extra tourists Universal brought to Orlando with Hogsmeade and Diagon. Plus, they're probably still counting on tourist visits for the Potter coaster to last into 2021.......But I still think a basically unthemed coaster should be ready for 2020. Seems incomprehensible it will take until 2021 to build it if they're starting construction soon.