It’s incredibly rare for Apple to publicly talk about things that won’t be selling extremely soon.
The iPhone had to be pronounced because it was going to show up on the FCC website, and obviously Apple wanted to control the message. I suspect the Vision Pro may be similar, but they also wanted developers to start getting ready so they would have software day one.
The only thing I can think of that Apple pre-announced and failed at was the Air Power mat. They said it would be coming out soon after and had to push that a couple times before finally canceling it.
Other than that small exception, if modern (post jobs return) Apple announces something is coming, it will come out and be quite close to what they say.
They don’t pull a Humane AI, Segway, Cyberpunk 2077, or No Man’s Sky.
The hardware, that is.
With software, their Come to Jesus moment is still in the future.
(To me, Swift is sort of the Jony correlate on the software side. Doesn't fit perfectly, of course, but very similar "we are perfect who cares about evidence la la la I can't hear you" vibes and results)
All of Apple's windows software (iTunes, Safari, etc) has been, at best, a barely working port.
I'm assuming they are putting a lot more thought and care into it than the touchbar, crappy keyboards and the rest, but I'm also not holding out much hope either.