Google recentlty teased the YouTube Music support for the HomePod and now this support is officially rolling out.
This lets you use voice commands — “Hey Siri, play music” — to start YouTube Music on a HomePod. It’s a nice alternative to manually starting the app on your phone and then using AirPlay. Like on Google Assistant speakers, you must be a paid YouTube Premium or Music Premium subscriber.
How to set up?
To set up, update to the latest version of YouTube Music in the App Store. Tap your profile image in the top-right corner for Settings > Connected Apps > Connect with HomePod. This involves signing in to your Google Account.