EDIT: interestingly, I refreshed that news release page and cannot open it in Safari anymore — I'm getting a blank page. Same in anonymous window. Works fine in Chrome, though, lol!
Meanwhile I checked the Apple TV 4k 2021 model teardown and goes what, it also has a ZigBee/Thread/Bluetooth chip: https://www.ifixit.com/Teardown/Apple+TV+4K+2021+Teardown/14...
https://www.nordicsemi.com/products/nrf52833
This is a complete b/s and as an owner of 2021, I am pissed. I expect this to be picked up by the Apple-centric media.
EDIT: Well, LOL at myself: 2021 4k already has Thread support: https://support.apple.com/kb/SP845?locale=en_US So they didn't add anything specific to 2022 model in that regard.