http://www.techradar.com/news/sonos-might-soon-have-an-apple-homepod-style-smart-speaker-of-its-own

It was easy to dismiss the rumors that Sonos was planning on integrating Alexa, Amazon’s smart assistant, into its Play family of connected speakers. 

But, as it turns out, there were a lot more to those rumors than we thought: a recent FCC filing from the company shows the schematics for a smart speaker, one that could rival or even surpass the Apple HomePod, Google Home and Amazon Echo.