I picked up a Sonos One today after learning of the Airplay 2 support. Everything is working great with older speakers.
I'm trying to use Siri on my phone to launch music. It is setup in the Kitchen. However, after adding the new Sonos One to Homekit, and requesting music in the "kitchen" or "everywhere", Siri responds "Sorry, I couldn't play that in the kitchen"
I am running iOS 12 beta 3.