I’m going to say it isn’t coming
I think shrinking camera market size, obsession with sensor size and rise of the phone mean it’s not worth developing. Because the small improvements won’t justify the price.
We might see a super zoom but in a different way. Maybe an 80mp apsc sensor
Where would that come from? Even Sony's full-frame cameras only get up to 60mp. Nobody does an APS-C camera with more than 40mp, and most are about 24mp.
One day there will be
Why? It would have tiny pixels, with really poor low light performance and a terrible dynamic range.
and a 18-200 lens with an effective digital zoom.
It would be either very slow or very bulky. And it would be a big step backwards from the current lens.
My hunch is more total light gathering at the wide end. Similar mid zoom less at full zoom
But not as wide at the wide end.
Or clip to hold your phone as the rear screen with aps-c link to the camera
APS-C link? What's that?
auto correct, sorry, usb-c
Similar ideas were tried and soon abandoned by Sony and DxO about a decade ago. That project bankrupted DxO, and nobody will be foolish enough to repeat it.
https://www.digitaltrends.com/photography/dxo-one-discontinued/
So, forget all these wild ideas that don't comply with the rules of physics and economics. If there is an RX10M5 it will have:
- the same form factor as the M4
- the same lens as the M4
- a newer version of the 20mp 1" sensor
- the new Bionz XR, together with all-new electronics
- a full touch-screen UI, and Sony's latest AF tech
- USB-C
- maybe the Z battery and a high speed UHS-II card.
I expect it in the summer of 2024.