Use Sonos App as a microphone/intercom to one or all “Rooms” / speakers

Are there plans (or is there a way) to use the Sonos app from your phone to broadcast what you say in the phone’s microphone to one or all of the rooms so it acts like an intercom? A use case would be to announce to everyone in the house that “dinner is ready!” or “the bus is here!”. Just use the app, select the rooms - but instead of using radio/pandora/etc., there would be an option for microphone/intercom. Once selected, you can say your message from your phone and then go back to what you were listening to.