Good to hear it (y) Don’t get me wrong Ive absolutely no complaints about Sonos gear, I’m a huge fan. Just don’t think this was a good price and anyone jumping into Sonos would be better spending a little more and getting Ones on a deal time (and they come round regular). I see Sonos like the Apple of modern home speaker systems. Built to last, most importantly sound great but you pay for it as they’re not cheap. But, like Apple products, with Sonos you definitely get what you pay for.
I’ve never seen different hardware revisions for the play:1, what are they?
Whilst the speakers should still be able to play audio they can't guarantee that changes to 3rd party music services to newer audio formats or new encryption/DRM can be supported indefinitely. So whilst they can probably support local playback indefinately they may eventually stop working with various music services.
I think there is more than one revision of the play:1, but yes these are getting a bit long in the tooth, that said they still currently work fine and they sound decent (at least to my untrained ear)
From the day they stop selling a product its 5 years support. After that time they will no longer receive new updates, but will continue to work.