In my case, using a Mac Studio and running XP12 in MacOS Tahoe 26.2 under Rosetta, the plane has a big red X in one of the glass panels, stating that the plane is not activated. Studying both the older Gizmo activation and newer X-Aviation panels show that the plane is licensed. Running 12.4.0-b2 as above.
As this plane is one of the newer products in the X-Aviation fleet, is it possible to get it to work natively in ARM64? I do see that earlier products, which had a lot of their systems running with Gizmo64, may well be much more of a problem for a small team, and I guess (to be honest) that the work involved would not bring in enough money to cover the cost in time to do this work. Some of the planes are still not compatible with XP12. I would, however, not expect Cameron to give away such upgrades, because they are not bug fixes, nor minor additions to functionality. A sensible charge is reasonable. In fact, other developers are charging, often like a completely new product, but giving a (say) 20% discount for customers who own an earlier version.
The CL650 worked with XP11 from the start, and was working in 12 in 2022, so the conversion to ARM64 really should not warrant buying the product again. However, we Mac users (a minority of the user base) are probably a bit surprised that the genius who is Toto, did not make the plane ARM compatible from the word go. After all, Macs were being produced with ARM chips in late 2020, and the transition from Intel was almost complete by 2022!
Oh well, I can use the 525 in the meantime