With the latest update, which is already rolling out, Google has added multi-room playback support for the Chromecast, when it is paired with Google Home speakers. This will add the Chromecast to the Home ecosystem and allow you to play a song, a playlist, a podcast or even an audiobook. The Chromecast will then let you play it across all speakers and other Chromecast-connected devices in your house.

Earlier, the Home ecosystem only allowed for speaker groups to be made with audio devices. Obviously, this did not include the Chromecast. The speaker support for Chromecast had been announced by Google way back in October. The feature is already available for users who are a part [...]