mine are

PS4 - 200 Million 

NX - 100 Million

Xbox One - 70 Million

Wii U -  15 Million

early 2019 we will see new consoles, MS will start first and Sony later in november or 2020. Crossgen between 8 and 9 Gen will hold a lot longer

My outlook is more like:

PS4 = 135-140m

XB1 = 65-70m

Wii U = 16-17m

NX? I need to see the launch first and judge how I precieve it and others here on the forums.

It could be a Wii U 2.0  or a new Wii, when it comes to sales. No way to know before knowing what it actually is.

yes it will its outpacing PS2 numbers, i except crossgen lasting a lot longer than this gen

PS4 - 100m
XB1 - 50m
Wii U - Can see it going either way, so I'll just say 16~18m

NX - ???

Too early to tell, we don't know much about it, but I can see it being a success if Nintendo play the right cards, of course.