Sonos is working on a portable Bluetooth speaker, The Verge and Zatz Not Funny! report-- one primarily designed for wifi streaming, but also featuring Bluetooth and Bluetooth Low Energy (BLE) for "simplified setup."
The leak comes as Sonos files the details for two devices with the US Federal Communications Commission, aka the FCC. The filing for product model S17 details a "high-performance wireless speaker and part of the Sonos sound system." The aforementioned reference to Bluetooth is significant, since that would make it the first Sonos speaker with support for the technology, aside from the BLE capability of the Sonos One.
Zatz Not Fynny claims to have a photo of the speaker. As seen here it features a more rounded design compared to the Sonos One, but has identical controls on the top. The Verge says it spoke to a "person familiar with its capabilities," and adds the speaker supports voice controls via either Amazon Alexa or Google Assistant, and charges using either a base station or USB-C. The back has an integrated handle, together with a switch allowing users to switch between Bluetooth and wifi (standard Sonos modes).
Another interesting feature is what Sonos calls "Auto Trueplay." Whereas users can tune current Sonos speakers by using a smartphone microphone and walking around the room the speaker is in, Auto Trueplay uses the speaker's built-in voice microphone to automatically adjust audio output. It can even detect if the portable speaker has been moved, and automatically recalibrates playback accordingly.
Sonos has neither confirmed nor denied the reports, but it does have an event in the works for 26-27 August 2019, meaning we will surely learn more about its Bluetooth speaker plans then.