This report addresses emerging business questions around voice interfaces in the connected home. It includes an overview of where voice interfaces are today, including which devices have them and how many are being sold to consumers. Additionally, it includes a detailed discussion of where voice interfaces are headed, covering what fully-integrated ecosystems around digital voice assistants will look like, which companies are well-positioned to offer them, and which resources they have to draw on as well as what challenges they will need to overcome to drive mass adoption of digital voice assistants and who else in the connected home ecosystem will be impacted. Finally, it offers guidance on what growth in devices with voice interfaces will look like over the next five years.