I expect Sony to cut the PS4 to 249 and the pro to 349.
So my predictions for the year:
PS4: 15-16M (maybe over 16 if we get a 199 model later in the year.)
Switch: 17-18M(maybe approaching 19M with a revision.)
Xbox one: 3-4M (yea this is going to fall off hard..... wonder if the system can hit 50M LT sales? )