My money would have been on multiple what-we-were-calling-M1X-until-yesterday SoCs even before seeing
@Boil's post about the rumours.
Personally, I'd say that there would be huge potential in
a single M1 Pro or Max in a Mini or iMac format and am disappointed that it didn't launch yesterday (but not surprised - it's the MacBook Pro that is going to be the big money item, and Apple Silicon is always going to make the biggest splash in laptops where power consumption and thermals rule).