How's the Saudi ski resort coming?[1] That's part of the same project.
That's supposed to be ready for the 2026 Winter Games.
Google Earth shows roads, a perimeter fence, a water tower, and some buildings as of August 2023, so work is going on.
I worked on the design of this a couple of years ago. One day we were tasked with working out how to freeze the lake over so that people could go ice skating on it.
There's a fractal insanity to the whole project. As you focus in on any one aspect, more silliness appears. The design process is driven by the Crown Prince pointing at 3D renders and saying he likes the one that looks the most cyberpunk.
[1] https://www.neom.com/en-us/regions/trojena