I think that iPhone 8 is jsut about the finished iPhone. What comes after that is a ton of “new tail lights and fenders” in order to keep selling iPhones.

There is one particular feature, though, which is available on Pro models from iPhone 12 Pro. That is the LIDAR addition to the cameras. This makes it possible to do 3D scans of rooms and objects with apps like Polycam. - I have that, but I must admit that even though the hardware is OK there is a a long way to go for the apps.

So staying on iPhone 8 and getting a compatible watch is the sensible solution. - If you need an. Apple watch at all. I use my Watch 6 for a lot of very practical purposes with different apps/complications. But none of all that fitness stuff. I’m 72.

It could be a good excuse for a new iPhone…

The watch is working behind the scenes. Normal. Just wait it out.

I would go to Apple’s homepage and read all about it there.

https://www.apple.com/watch/