Dieter Bohn of The Verge reports:
Sonos just announced that AirPlay 2 is coming to “newer” Sonos speakers in July. Unlike using Apple Music on the HomePod, it will stream music from your phone instead of directly over the internet. However, unlike the HomePod you will be able to control some of the AirPlay 2 music with Alexa. You can launch music on your iOS device in all the normal ways, including with Siri.