I expect much greater # then 1.5M consoles increase compare to 2017.
Check out the Sea of Thieves Beta, combine with Game pass news and PUBG is a gaming trend setter. It's already at 4 million players on Xbox one.
4 million players on PUBG is significant, but what has it done for Xbox hardware? Unless we're going to start ignoring Amazon, I've not seen a sudden surge in Xbox consoles sold.