Has now been announced, shipping mid next year.
https://blog.prusaprinters.org/origi...st-look_58312/

My thoughts.
Some weird - dual bed axis? I expect Prusa can get away with it with their tight manufacturing tolerances, but still an unusual decision.

The good - Extruder has some very cool features, including a load cell to determine first layer thickness, regardless of the print surface, and also to tell if a jam has occurred. Very clever lateral thinking.
Other good - Printer seems designed to be as compact as possible, which is always a good thing, IMO.

The very good - PCB bed in multiple segments with zones. This, IMO is very interesting, opening up the possibility for large DC beds, biased and small area heating, and removing the need to heat up a huge slab of glass or aluminium.

And lots of other interesting stuff. I suspect quite a few of these ideas we'll see adopted by others in the industry.