Thank you for your patience, and sorry for not responding earlier. We still do not have an on-prem solution for Power BI Embedded, it's still a priortiy for our teams to deliver this and we're working on it. We do not have an ETA at the moment, but will reply here once we do.
I do not believe you answered the original question. Yes, Power BI Report Server will support on-prem connectivity to a SQL Server Analysis Services database, but what about PBI Embedded? When will PBI Embedded support on-prem connectivity?