This isn't really Axis related but SBF Visa have lately set up an unusually large Big Air coaster. Commissioning has taken place at their factory;
https://www.facebook.com/SBFVISAgroup/videos/1273924734383877
Given several characteristics (spider web cars, unusually high elevation, the layout fitting in a box, some track mounts being built onto a superstructure), I think this is also for Saudi Entertainment Ventures. A couple of their locations (Yanbu) are developing Little Beasties FEC's with SBF Visa rides to be featured;
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https://youtu.be/vCLXtGkbZ-M
I would expect you're right. Pretty much every SEVEN location appears as if it will have a kids area with some variety of SBF coaster. Supposedly Yanbu and a few other ancillary cities were supposed to be opening this year. Yanbu's exterior looked done the last I'd seen, but the interior fitout could be delayed. On the whole, a lot of the SEVENs are delayed or slowed it seems. Since being absorbed under Qiddiya there's a bit of a shakeup happening and internally it sounds a bit of a mess at the moment.
Riyadh Al Hamra-- the one with the first Axis-- is moving along on the exterior but seems like progress has slowed quite a bit. I would estimate it will not be ready until mid to late 2026. I drive by this one fairly often but it's hard to see any interior progress at this point.
Riyadh Al Nahda, which has an indoor ski slope, is further behind that with the building still very much in the early structural phases and is not close to being dried-in. This seems to be 2027-8. I drove by this one last weekend and the big framework for the ski slope is going up but is maybe only half to 2/3 complete.
Dammam, which should have the 2nd Axis and has a full waterpark has foundations in the ground now for a few structures, just piles for others, and just groundwork for the rest. When I was over there a year ago, they were doing soil borings, so the progress feels quite slow.
Khobar-- just south of Dammam-- also appears to be just at the piles stage.
Tabuk, Taif, Jazan, Yanbu, and Abha all seem to be the further along though lacking larger ride components like big coasters or waterparks. These will all most likely have an SBF of some variety.