Apple Watch Ultra to Ultra 3 --- I think what's most likely to happen in my case is that I purchase an Apple Watch X for daily wear and keep my Ultra for long hiking especially if the AWX is thinner with a similar sized 2 inch screen.

The Ultra is amazing and with AWU3 rumors being that the patent dispute means less features than I have on my AWU1 and not main gains in the SIP performance, I see no compelling reason to upgrade. However, an AWX new case design would tempt me.