Apple used their 2017 developers conference to launch their new Airplay system.  Airplay2 will allow multi room audio, control through Siri, the Apple Home App and supported directly from iOs rather than through iTunes.

Some major manufacturers are already on board including; Bang and Olufsen, Polk, Denon, Bowers and Wilkins, Definitive Technology, Devialet, Naim, Bluesound and of course their own Beats by Dre and their new Apple HomePod.

Apples own Homepod is also a speaker, it's expensive enough that it could be seen as a rival to Sonos and other multi room audio system and if Apple play this well it could leapfrog them into the Smart Home territory they have been eyeing up for years.