Switch - 5.830m
According to Media Create. Still 1.5m to go, of which a significant chunk will be made during the holiday season. Afterwards it depends on where the baselines for the two consoles settle in 2019, so giving a good estimate isn't easy. Release-wise, the first calendar quarter tends to be PlayStation's best and Nintendo's worst, so that's a factor that can push back the date.
It will definitely happen in 2019, but without knowing the margin that will be left after the holiday season, it's really hard to narrow it down to a specific month or two.
Hey, good to see you back dude! Was bummed out when you got banned.
Bet with Liquidlaser: I say PS5 and Xbox Series will sell more than 56 million combined by the end of 2023.