This recent announcement from Amazon seems to indicate that they are going to be rolling out an Apple Music skill for Alexa users so they can access the Apple Music DSP natively with voice commands.
Interestingly it does state that this is for Echo user/devices though and no mention of partner speakers such as Sonos.
If this is a new Alexa Skill, will this not mean that Sonos users will by default be able to access AM via native voice commands on Sonos One's, Beam etc too? ...Or is this wishful thinking!!!
Either way, it is an interesting development and hopefully this news means we will have Apple Music native voice integration on Sonos units at some point sooner rather than later!