Enlarge (credit: Jeff Dunn) Apple's iOS 11.4 rolls out today, and it brings a big update to HomePods: AirPlay 2 with multi-room audio. The update allows the HomePod and Apple TV (the two Apple devices that currently support AirPlay 2), as well as forthcoming third-party AirPlay 2 devices, to play the same audio throughout your home or only in select areas of your home. All AirPlay 2 devices can be controlled using an iOS device, HomePod, Apple TV, or by asking Siri.