Edit:
Official page is up.
https://www.spotify.com/nl/xbox/
FAQ
https://support.spotify.com/listen_everywhere/on_games_consoles/spotify-on-xbox-one/
The app you can find when you search at entertainment and then all apps on Xbox. Just cant download it yet.
Just chatted with support and they said later today.
You can download it now. Go to the entertainment tab and select all apps. Its at the top right away.
Official page is up.
https://www.spotify.com/nl/xbox/
FAQ
https://support.spotify.com/listen_everywhere/on_games_consoles/spotify-on-xbox-one/
The app you can find when you search at entertainment and then all apps on Xbox. Just cant download it yet.
Just chatted with support and they said later today.