After last week's slip which unveiled Spotify for Xbox, Microsoft has now listed the app in the Microsoft Store.
The app will support background play as well as allowing remote control from any other device running Spotify - PC, smartphone or tablet.
Spotify now has three different apps for the Windows 10 platform: Mobile, PC and Xbox. Logic would dictate that the company would want to build a UWP app which can run in all three places.
It seems likely that the Xbox app is that app, replacing the Centennial desktop app and the mobile app sometime in the near future.