iOS 11.4 begins to support AirPlay 2 [developer.apple.com]. These B&O (Bang & Olufsen) products are compatible with the new feature.
-• Beoplay M3
-• Beoplay M5
-• Beoplay A6
-• Beoplay A9 mk2
-• BeoSound 1
-• BeoSound 2
-• Beosound 35
-• BeoSound Essence mk2
-• BeoSound Core
-• BeoSound Shape (via BeoSound Core)
-• BeoVision Eclipse TV (audio only)