Google Assistant now broadcasts messages throughout your house on all speakers

Starting today, Google Assistant just became even more useful than ever. From this point on, you can use it to broadcast messages throughout your house - stuff like "it's time for school" or "breakfast is ready", you get the gist. You can create such a broadcast message from any device with Assistant - say your phone or a Google Home device. The message will be broadcast by all the Assistant-enabled speakers in your home. Simply say "Ok Google, broadcast" immediately followed by your message. There are special effects for some things - if you say "Ok Google, broadcast it's dinner...