Spotify becomes a Windows 10 Store app, but you need Spoticast UWP
(All About Windows Phone)

I`m sure you saw the news overnight that Spotify has now appeared in the Windows 10 Store, thanks to the Centennial Bridge, meaning that it can be part of proceedings on - for example - Windows 10 S. A major scalp for the platform, though there`s unlikely to be an explicit W10M version now, so mobile users still need to think laterally.