http://www.techradar.com/news/roku-joins-voice-assistant-race-to-rival-alexa-and-google-assistant

Roku is no stranger to voice control, having included voice search in its streaming boxes for some time now, but this functionality is set to take a big step forward with the launch of a fully-fledged voice assistant. 

However, while other voice assistant manufacturers such as Amazon and Google produce their own speaker hardware to house this software, Roku's plan is to rely solely on third-party manufacturers.