Three devices went offline shortly after the firmware upgrade.
Before the beta I had one door lock that would not work with device health enabled.
In beta 014 I turned device health on, and everything worked fine. Even through the 015 firmware everything worked well.
Shortly after 016 three devices went unavailable. Front door, garage stair lights and stair lights. One I turned devicenhealth off all worked again once i toggled the device.
However. I have spent a little more time testing this tonight, and all is back to normal with device health on. Not sure what happened.