Naturally though any new console would need to arrive in time for the holiday season to make the most money initially. Sony, however, has denied that it will launch the PS5 this year, claiming in the Wall Street Journal that the console wouldn't arrive until 2021. Sony has, however, admitted that the PS4 is coming to the end of its life. Naturally with that many consoles sold there's a chance that the marker is saturated. That's likely the reason Sony sold a million fewer consoles before Christmas 2018 than it did in 2017.
Source: Daily Mirror February 08, 2019 11:37 UTC