It looks like we might be seeing Spotify hit the Xbox soon! Larry 'Major Nelson' Hryb, the Director of Programming for the Microsoft gaming network Xbox Live, has been spotted using the app, specifically listed as being 'for Xbox'.
Hryb hasn't responded, though he has been active elsewhere. Spotify labels itself as Spotify Music across a number of platforms (Apple's App Store, Google Play, Amazon's App Store, and the Windows Store) and while there might be the thought that Hryb is using the Window's version, it is specifically noted that he is using an Xbox version.
Twitter user MondoXbox first noticed it and the image was shared on Reddit by Mondo's peer, the duo both work on 'Spanish Xbox dedicated web portals.'
Spotify has been available on PS4 and PS3 since March 30th, 2015.