Credits for the find: <a href="https://twitter.com/s1guza/status/1071951039115464704" rel="nofollow">https://twitter.com/s1guza/status/1071951039115464704</a>
IoT solution based on XNU? - bit outside of Apple's gamut but I could see it. iotOS<p>EDIT: Eh, maybe not the copyright is quite old - perhaps more likely some internal test? Run ARM64 XNU tests on Raspberry Pis maybe? They are pretty cheap hardware with lots of ports.
This file is from 2016, apparently, so Apple has likely been using this for quite some time. It's possible that Apple found it convenient to run certain things (guesses: some IoT thing or prototyping a small embedded processor like the one inside the Lightning Digital AV Adapter) on a Raspberry Pi rather than a full-blown A-series core or other chip that is inconvenient due to {price, availability, etc.}.
Not being familiar with the term XNU, I did a little clicking around and hopefully I understand a bit better:<p>This file is evidence that Apple has been running iOS/MacOS on the Raspberry Pi 3?