Progress
Korg is about to release a MIDI 2.0 controller keyboard with a poly-aftertouch keyboard. ( The keybed is from the keybed, and much else manufacturer Medeli. )
More info in this thread.
I expect more details to be coming along for how this works specifically and about integration with other hardware and software devices.
Thinking that they may add MIDI 2.0 support with their Wavestate Native software, as they are including the L.E. version of it with the controller. Just a hunch on that though. This certainly gives Korg an opportunity to put this sort of thing in their other software and hardware.