I’ve only heard a few excerpts from NAMM (I think it was). I’m not particularly exited for this and I don’t know why people are. I think it sounds like the acoustic sim pedals already out there. And there are no good acoustic sim pedals as of yet. They sound very fake IMHO. Maybe I’m wrong.
It would IMHO be a great feature for rehearsals etc. To me the portability factor of the KPA is hugely important. Say I've got a rehearsal with a band I only play once with, and they want me to do some acoustic songs but mostly electrics, I can just use my electric through the KPA for that during the rehearsals and use a real acoustic during the actual gig. It would maintain my one-walk-to-the-car rule and that would be a big plus for me.