Speaker s3 still can work in 2026?

Yes, here’s a map of speaker compatibility. However, PLAY:3 cannot support some of the latest features, such as Bluetooth.

I have a pair of Play 3s and a Sub working well on the latest S2 software.

Every Sonos speaker ever made still gets updates so it works in 2026.

Just to confirm, they can run either S1 operating system, or S2 operating system, but not both simultaneously. My pair of PLAY:3s are running S2, and function quite well.