I'm not sure if this is real but they're now saying there's no expected opening date on google review replies
"Regrettably we can confirm that the Scooby Doo Spooky Coaster has been closed for some time now. The current track had reached its end of life and is now getting a multimillion-dollar upgrade. This process will require some time, and as such, no new opening date regarding the Scooby Doo Spooky Coaster Next Generation has been announced. Our maintenance team is working hard alongside the manufacturers to ensure all refurb is carried out for a new spectacular Scooby Doo experience. "