I do not know. I'm Spotify user, Spotify does not respond to Windows Phone problems because no one in Spotify use this app... And app is developed by Microsoft... So there is no updates at all soon, maybe we get one when Microsoft release a new Windows Phone version... But not before.
Spotify moved responsiblity to me... Only I contribute here answering, as you may see... But I'm afraid I do not know when Spotify update this app.