Don’t they need to communicate to developers and users what software will (and will not) run on their upcoming computers?
Because they're trying to get the message across to regular people (not HN types) that their software will continue working with the new chips, and they don't have to flee the Apple ecosystem.
That's par for course with Apple. They never acknowledge competitors including when its themselves. Everything they do or describe is awesome and magical, right now! It could be an incremental improvement, it could be a half decade old established technology, it could be something completely unexpected and science fiction turned into reality. Thats just how Apple works.
Unlike which company that does?
That's referencing them to tell how better you are: "Optional Clear View™ mast offers up to 40% greater visibility than leading competitors."
Apple does that too.
I'm more interested in how they're doing the AOT conversion and (presumably) patching the result to still be able to emulate for JITs. That'd be (comparatively) simple if it was just for things from the iOS and Mac App Stores since Apple has the IR for them still but they made it sound like it was more generic than that.
https://www.qemu.org/docs/master/user/main.html