After releasing the Sonos Subwoofer, the rumor was that a 5.1 offering was on the way from the manufacturer. Well, we can safely stop speculating; Sonos has released the Playbar, a 3 channel speaker bar designed to live in front of a TV. The Playbar signals a departure from traditional Sonos gear, which was Stereo only.
The Playbar offers a TV centric setup 'while preserving the integrity of the music'. It can be paired with the Play:3 speakers as rears and a Sub to create a surround sound setup.