https://en.community.sonos.com/announcements-228985/introducing-s2-new-app-and-os-for-sonos-6841762

Hmm, does not say anything about SMB version 2/3 support, or changes in STP/RSTP or library size?

Because there aren’t any of those things (yet?). There’s been no promises from Sonos about those features, only speculation from users, like me. 

Still only supports SMB1 - this really HAS to change some time soon

Just came here to see if my Sonos(s) could handle my whole music library after release of S2….Apparently not :-(

Some goes for the multi-genres tags i’d gather

At Sonos recommendation updated to S2, All I now have is 3 promo pages and Terms of Service.

Have also seen  that S2 not available in this region - Ireland.

What’s happening with this faulty update

Was hoping S2 would bring support so you could view all of the sound formats being outputted via your product to the main screen rather than having to dig in to settings, would be helpful feature to have.