[toni-a]

Well, obviously pre-owned units aren't going to turn into pumpkins. I mean, as far as the new products go.
But while I was already considering (theoretically for the time being) a Laowa 9mm f/5.6 or a similar lens - despite my desire to avoid MF lenses at any coast - news of the 10mm f/2.8 in Z-mount have made me completely abandon that idea. If that 10mm unit is good, I'll go for it, someday (I'm close to repaying the debt over the purchase of Z9 so it's like I'll be free to indulge in GAS again... lol)

Frankly on a 9mmf5.6 lens,  focusing itself is not needed, let alone autofocus: 
the depth of field is so big that if you set the lens to focus at 1 to 2 meters distance everything from 40cm to infinity will be in focus....
On my 8mmf3.5 I just use scale distance on lens barrel to focus and all my shots are in focus...
Having autofocus on a 9mm f5.6 lens is for me irrelevant...