I know in a year or so this thread will be updated with a news article saying it's been cancelled but I'd love this to happen and to be able to add this park onto a Dubai trip.
Nah, in a year or so even more fancy renderings will have been put out, maybe even we'll see a local bigwig (his highness the prince sheik blablabla, Saudi Arabia has a few hundred of those) peering over a fairly detailed model of the park in some press release pictures to give an impression that the Saudi royal family is on board with the project. Then investors will put in money, blended by the promised visitor numbers (17 million by 2030! As if Riyadh will have twice as many international visits as Istanbul in just a decade - never mind how many of its international arrivals are pilgrims from less affluent countries!) and seemingly safe return on money.
Then expect a few years to pass without any news whatsoever. Two months before the supposed opening date, the visitor center will be the only structure standing on the site. A delay of two years will suddenly be announced, to try to deflect questions from investors who begin to wonder where their money went. By then, it will all have been spent on "consulting services" to a company owned by some shell company tracing back to some tax haven. Coincidentally, the lead developer of the park will be registering a new yacht in that same tax haven around the same time, and no longer be available for comment.
And
then a news article will say it's been cancelled, if we hear anything at all. I'm following large construction projects with some interest, and a surprising number of them in Saudi Arabia and the UAE tend to end up in roughly the same way. Fancy render, fancy model, groundbreaking ceremony, maybe some ground work, then one day the site is abandoned and investors start asking where their money went, news article a few years later describing how the developer is going bankrupt and the head honcho is either abroad or in jail.