Once again Sonos chooses to punish its customer base. When S3 is released, be prepared to have to scrap your existing stuff and give Sonos loads more of your cash. If I were an investor in Sonos, I'd sell my stock right now.
I've just bought Roam. Big mistake. It messes up my current system, a mixture of S1 and S2 components. I don't know if I can get Roam working or will have to return it.