Unfortunately Denon failed to supply the receiver for the lead First Test in time for our review deadlines, but by that time the cover had aready gone to the printers (it goes ahead of the rest of the mag) and it was too late to change it. Annoying, for sure, but unfortunately these things do happen.
As for the multiroon news feature, I think many ordinary consumers (rather than tech-savvy Forum users) are still unaware of how to set up a multiroom system, and how easy and affordable it now is. As Joe says, the new Sonos Play:3 is clearly aimed at a much more mainstream audience, and Sonos is changing its entire marketing strategy to reflect that.
Just because those 'in the know' are aware of something, doesn't mean it's entered the mainstream. Many of my friends, for example, don't have a clue about all this stuff yet would be interested to know more. And the arrival of streaming services like Spotify has further fuelled interest.