The PS4 is doing very well for Sony even though the standard console is a bit long in the tooth at this point. The console continues to sell robustly and analyst Lewis Ward, a researcher with IDC, says that the console will probably hit 100 million units sold in 2019. That would mean between 2018 and 2019, the console would need to sell another 30 million units. PS4 sales of an additional 30 million
The new PS4 Pro is certainly going to be instrumental in helping to push the console to 100 million units. That Pro version is a stopgap measure to give 4K TV owners and fans wanting more processing power something to tide them over until the PlayStation 5 rolls out. Ward also has an opinion on what that consoles will hit the market. "Right now I think PS5 and the next-gen Xbox will arrive in 2021, but that’s really just a tentative placeholder in my forecast."
As for the competition to the PS4, the Xbox One, it is still lagging far behind the PS4 in sales numbers. The PS4 has so far moved nearly twice as many units as the Xbox One. If you are wondering how PS4 sales compare to sales of the PS3, that older console moved 80 million units in its lifespan.