UOR wanted a "sandwich approach" to Star Wars--Potter coaster year before, Nintendo year after. I don't see them abandoning that and taking a "wait-and-see" approach to SWL. They need a mega-E ticket ready to go 2021ush. If that's not Nintendo ... what is it?
If anything, a new park announced just before SWL opens but not open until 2 or 3 years after would be Potter 1.0 all over again. No way corporate lets that happen.