The team is working on the API, and we will post as we have more information.
In the meantime, for Embrava, please note they have announced presence support for TeamsOnly mode with their version 5.2.16.
A fix for this is being worked on. We hope to have a fix in internal Microsoft rings soon for testing. I don’t have a timeline for release externally at this point, but will keep you posted.
We are still considering this feature for future releases, and will continue to update the status when it changes.