It's not surprising that Eero would be one of the earliest router makers to support HomeKit. Apple has a few key tie-ins with Eero's parent Amazon, including support for Apple Music on Alexa devices and Apple TV+ on Fire TV hardware. Even so, this is a big move. If you live in an Apple-centric household, this might be as close as you get to an official HomeKit-friendly solution with AirPort still out of the picture.