First PUBG & Sea of Thieves is going to boost sales in Q1, Last year the only major release was Halo Wars 2.
That's only what we know about, Microsoft could have further surprise for 2018 at E3.
Let's take a close look...
A. 4K Gaming won't mean much of anything
B. Sea of Thieves, while I expect it be good, still is an unproven IP (and also on PC)
C. I don't expect Game Pass to be a system seller, but maybe
So far, that looks like a good list of things, but I'm not sure that will be enough to be up 1.5m this year.