If we look at social media metrics, they have 2 record posts in gaming history (console logo and DS announcement) in Instagram and Twitter. So they are very successful with their marketing.
I'd prefer to see the console box and the remaining hardware details, like which type of wifi, bluetooth, etc. in addition to OS features and apps. But I assume that they prefer to spread the announcements over time to keep the hype and increase the communication providing by protagonism to each one of these parts.
The other elephant in the room are the games. I assume that, as happened in recent years, due to downgrade controversies we saw in the past Sony prefers to wait until they are pretty close to the announcement to make sure they show pretty final in-engine stuff running on the console that looks as close to the final game as possible.
This is pretty difficult specially in an unreleased console since not only the devkits but also SDKs and engines keep evolving and changing over time and it's pretty difficult to plan until which point they will be optimized, which means that certain visual effects or other stuff may need to be changed or removed in the future maybe because they sometimes work in some part of the game but causes issues in another one, or that they made some memory or horsepower budgets that in the final version they are pretty smaller. So knowing that many people won't understand this, and even if it doesn't happen many fanboys will be spreading FUD, it's normal that they wait for as long as possible before showing their games.
I expect them to reveal the console in May (more focused in the box form factor, additional secondary hardware specs and OS features) with also maybe some game teased. But I think they will do a separate event after that focused on showcasing launch window games, maybe in June or July. Then in September or so they may announce release date, price, extra OS features, to showcase launch window games and to announce release dates of them, specially the games being released the same day than the console.
And well, due to the current record PS4 success in both hardware, games and services they don't need to invest a lot on marketing. Many people is already hyped because they trust them for their consoles, its games and services and want more of these. I mean, people will preorder the console when possible even before knowing games announced for it. Or preordered game like TLOU2 and decided to skip any gameplay video or related info because they trust that the game will be great and prefer to don't be spoiled.
That not marketing at all and they do that show every console launch.
See here's the PS4 one
It's just people went ape shit expecting the same as the Xbox Series X
Like the PS5 one, this talk is focused to devs in a dev focused conference. They aren't marketing focused to consumers.
xxx all is better now.
