I just heard back from CPLAY2air.
"Hi! I hope all is well. We're happy to let you know that we are supporting all Honda units from 2016-2020 now!
As long as your car has factory-installed* Apple Carplay and a standard USB port, it will now work with our adapter. 👍🏼
You may click the following link to see the list of supported vehicles and aftermarket head units:
CPLAY2air wireless adapter for factory CarPlay
Let me know if you have further questions.
*Apple-Carplay installed from the factory or upgraded through your dealer