There's a new Google Small Business Bulletin about how to connect your GBP with Gemini and what to do after. Also covers "business notebooks" in Gemini: how to create and use them.

For me the best part is the availability note saying this will eventually roll out to Google Workspace accounts! When it was initially announced they said it was only for single-location businesses (i.e. one Google account <--> one Google Business Profile, not agency friendly)