I am quite concerned the upcoming AD410 firmware will also bork the API and local event processing. In fact, the latest
AD110 firmware update did break local event processing, but not the API. It isn't clear if this was a developer error or was intentional.
Home Assistant users are needing to install a back-level AD110 firmware to restore doorbell press/motion detection functionality. So AD410/HA users should NOT install the new firmware when it first comes out and wait and see.
There is an alternative for the DB6I. As reported
here - if the device is registered with the IMOU app, a new custom HA integration can connect to a Dahua/IMOU cloud server to process (malformed) webhook events provided HA is running behind a reverse proxy. That is not the direction I want to go with connectivity, especially those of Chinese origin.
Edit: on further review, DB6I/DB11 doorbell press and motion events are not yet possible with this new custom integration, but are in the
issues queue as an enhancement request.