if its just a home system then 10-20million
IF they also treat it as a 3DS replacement and start making Pokemon for it i would say over 40million
its hard to guess with them now doing iPhone games and things tbh..
2018 Hit List: Shadow of the Colossus, Detroit, Dreams, Spider-Man, God Of War, Days Gone, Medievil, Tomb Raider 3, RDR2