Sonos has not made any announcements about expanding what services work with SVC, which doesn’t mean it’s not in development.  Sonos rarely announces what features they are developing.  However, it seems unlikely that Youtube music is coming anytime soon.  If you want to use your voice to control youtube music, the only way to do that now is to get a separate google voice speaker, which can then control your Sonos speakers.

As far as Google Assistant going being implimented on the more recent Sonos devices, I think there is a little bit of hope for that given Sonos recent change in management.  Maybe.  There is surely a licensing fee to consider, development costs, and that’s if the speakers have the right hardware.  Google also has a restriction that prevents a device from using GA and other voice assistants at the same time (which would mean no SVC).  Then we don’t know what the plans are for AI/Gemini...or I don’t atleast.

Hi ​@Kan 

Welcome to the Sonos Community!

Thank you - I've marked this thread as a feature request and it will be seen by the relevant teams for consideration. Keep the ideas coming!