While you wait (could be years) consider investing $40 in the Memory Moon ME80. It has the poly aftertouch you're wanting, plus it sounds a thousand times more like a real CS80 than the Arturia CS80V. The downside: the GUI isn't as snazzy and the preset picker is firmly stuck in the early 2000's. But if you want the best sounding CS80 emulator out there, and one which has the poly aftertouch, this is it.
