>>128 TRUE polyphony, irrespective of no. of tones etc.

BTW: I don't have a 5080 and don't plan on getting one, so someone correct me if I'm wrong: but I have been under the (perhaps mistaken) impression that its tonal architecture includes stereo possibility for each tone x 4 possible tones per patch = up to 8 tones for a single note in the patch. That is, press one key in such a patch and you are already using 8 voices of that 128-voice polyphony.

Does anyone know how that really shakes down?

Excuse me if I have misunderstood.