Apple has released iTunes 12.7.3, a minor update that appears to be focused entirely on adding support for Apple’s new HomePod speaker, featuring a redesigned AirPlay menu, similar to that found in iOS 11.2.5, that allows Apple Music playback to be started and controlled remotely on not only the new HomePod, but also fourth-generation Apple TV devices running tvOS 11.2.5.
iTunes is now designed to work with HomePod.
Use the improved AirPlay menu to easily choose HomePod and control what plays next with your Apple Music subscription.
When clicking on the AirPlay menu in iTunes 12.7.3, additional compatible playback destinations will be shown, and selecting an alternative target, such as an Apple TV, will allow you to control music playback on that device, with content selected from iTunes streamed directly from Apple Music in the cloud to the target device, rather than sent from your computer using AirPlay.