>>31228969Porygon Z is basically a Porygon 2 that got infected by a virus that can't be patched at this point, and Porygon 3 would be a separated program trying to get close to what Z was supposed to be; but the catch is that 3.0 won't be the same as powerful as the original plan that Z had.
Also, they couldn't call Z "Porygon 3" because it wasn't Silph Co. the one that created it. So 3 will only exist only if Silph Co. creates a new disc for 2, and since Z is an illegal evolution for their Pokémon, I doubt they will ever bother patching it, unless it makes it turn back to Porygon 2