The Verge reports: [edited]
Physically, the Home is a small cylinder with a modular case that you can customise with different base shells to match your decor. It will also have LED lights to let you know it's working. It boasts a powerful speaker, one of the main uses Google is foreseeing is listening to music.
Google Home is designed with multiple rooms and speakers in mind. And you can talk to any speaker and tell it to play music on other speakers. It will work with Google Play Music, but it should also be able to handle any other service that supports Google Cast.
Compatibility with Cast means it can talk to the Chromecast plugged into your TV.
Unfortunately, the Home won't support multiple Google accounts at launch, but the company says that will come in time.
It will let you ask Google questions, with responses optimised for audio and it will to work with a set of home automation devices — including thermostats and lights.
It's coming out later this year for an unspecified price.