3rd December 2019 is the 25th anniversary of the launch of the first playstation. I thought for sure they would have an event this year revealing the ps5 but they've said PSX isn't happening this year. I guess it could still happen. But if not then we'll get it revealed February to April.
LTD: PS4 - 125m, Switch - 110m, XBO - 51m
2020: PS4 - 9m, Switch - 22.5m, XBO - 2.5m, PS5 - 4.5m, XBX - 2.8m