I agree with this, but it still annoys me when they do this. It’s one thing I like about Apple etc, is that normally they announce something, and either the next day, or within a couple of weeks, you can buy it. Garmin are good at this too, when they announce something, they’re ready to ship it to stores almost straight away (thinking of my Edge 530 here).
If Ultegra 12s is announced summer 2022, say July, then I want to be able to have a groupset on my bike in August, and see it spec’d on the 2023 bikes which might hit the stores a few months later. If they announce that in july 2022, then unless you’re crazy desperate for a new bike/group, you’d just hold off until summer 2023 when the 12s ultegra groups and bikes are available.