The Google Cast protocol is one of Google's most useful services as it enables you to quickly play music, videos, podcasts, and more on your compatible smart speaker, smart display, TV, and more devices after finding the content you want to play on your Android device. Android TV devices are compatible with Google Cast, and now you can add them to speaker groups in the Google Home app.

Last night, Twitter user @androidtv_rumor noticed (via 9to5Google) that he was able to add his NVIDIA SHIELD TV to a speaker group that includes a Google Nest Hub smart display and Google Home Mini smart speaker. He says that this feature was enabled via an update to version 1.47.207274 for the pre-installed "Chromecast built-in" app. Another Twitter user confirmed that they were able to add their SHIELD TV to a speaker group after receiving this update.

Creating a speaker group is a handy feature in the Google Home app as it allows you to cast media to multiple Google Cast devices simultaneously. The ability to add Google Cast devices to speaker groups was initially only available for Google Home smart speakers, Chromecast Audio devices, and other Google Cast-enabled speakers. In November of 2018, Google rolled out the ability to add Chromecasts to speaker groups in the Google Home app. Android TV devices have built-in Google Cast functionality but only now are they getting the ability to be added to speaker groups.In case you haven't received this update to the "Chromecast built-in" app yet, you can sign up for the beta program on the Google Play Store. Then, open up the Google Home app to see if you can add your Android TV device to a speaker group.