Lots of things with Apple come out of nowhere. In this case there's actually quite a bit more evidence than usual because of all the fielded, underutilized hard

Lots of things with Apple come out of nowhere. In this case there's actually quite a bit more evidence than usual because of all the fielded, underutilized hardware that's ready to go— when it launches, it'll likely be available on millions of devices, rather than as something you have to get the latest hardware to have, as is the case when the camera or screen undergoes a drastic improvement, or there's a new feature like wireless charging or NFC payments.