Mid-cycle feature updates benefit users and developers. Let’s make it a habit.

We’ve come to expect Apple to roll out new operating-system features on an annual cycle. Announce in June, ship in September or October, and spend the rest of the fall and spring fixing bugs and adding the features that didn’t get finished in time.
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https://www.macworld.com/article/3526417/why-is-apple-rolling-out-new-os-features-in-february.html