Thats the thing though. By the end of this year the PS4 should firmly over 90M consoles sold to consumers. What possible point do they have to prove anymore as far as the PS4 is concerned?
I also expect that the new PS4 price is going to be locked to $199 for all of 2019. They can just sit back and let it trickle 10M worth of sales for all of 2019 and it will probably do betier than that anyways.
They put everything off and announce a PS5 in december 2019 to launch in march 2020 and all will be forgiven.
They don't have anything to prove in terms of PS4 anymore, but pushing in the clutch is one thing, never shifting into another gear, even one or two lower, for miles, is another. I think they'll drop PS4 to $249 early 2019, maybe bundled, and then officially announce $199 just before, or sometime during the PS5 reveal.
As long as they reveal before the year is over. Even though Feb 2020 would only be a couple months away, if they waited to reveal until then, assuming a holiday launch, I think an entire year gap in between 2018 and 2019 without a flood of heavy hitting games would lead to a breakdown in brand loyalty and hype for some. It also leaves the door wide open for MS and Nin, and they would be fools not to try and take major advantage of it in whatever way they can. With an early 2020 launch, PS needs to make sure they announce the price with enough notice before xmas, so interested gamers can then leave the tree a little bare and march right into PS5 at launch.