Yes it was Beta Tested by Bose, Bluesound, Denon and Google - they were all very happy with it's performance

Given that it can’t play local music libraries, has issues with 50% of the streaming services, I have to say no.  I can only assume the staff at Sonos that had access to the new app were reporting the same issues, but they went forward as they needed to release the headphone product.  I have no need for such a product in my house and honestly don’t see it as a fit with their line of speakers.  

At this point I have to assume that Sonos has no idea how to do software development, user testing and beta releases.  I think it is just a couple of guys and some overseas contractors.