Thread Home Accessory Support
The new Apple TV 4K also borrows a page from Apple’s HomePod mini by adding support for Thread, a low-power home mesh networking technology that’s starting to gain more widespread adoption.
It’s also fundamentally part of the Connected Home over IP (CHIP) project that Apple joined up with last year to create an interoperability standard for smart home devices, so it stands to reason that Apple wants to make sure that one of its key home hubs is on board with it.