The Sonos S2 update, which was announced in March, is live right now. It’s an entirely new app and operating system (OS) that, according to Sonos, is designed to “power the next generation of products and experiences.” It enables Sonos’s products, both old and new, to play higher-quality audio and gives some of Sonos’s newest products, like the brand-new Arc soundbar, support more advanced technologies.
How to update: If you have a Sonos system at home, you can update to the new app today. All you need to do is download the new S2 app (available on iOS and Android) and delete the old one. Your Sonos system will then automatically update to S2.
Here’s what else you need to know about Sonos’s S2 update.

Folks with older Sonos speakers are the most affected
Not every Sonos product supports the new Sonos S2 app and operating system. If you’ve been a Sonos user for ten years or more and you still use some of those original speakers or components, there’s a good chance that they won’t support Sonos S2. These speakers will not support S2:
• Zone Players, Learn More
• CR200, Learn More
• Bridge, Learn More
• Connect (Gen 1), Learn More
• Connect:Amp (Gen 1), Learn More
• Play:5 (Gen 1), Learn More