Hi everyone. Thanks to everyone for their contribution to this thread. We really appreciate it. In the interest of full disclosure, we’d like to share with you the status of this request.
We're confirming we aren't building a Metro App for Spotify. For this reason we're going to mark this as "Case Closed".
However we've noticed this thread has lots of users posting various questions about Windows 10 or Desktop issues. If you have another Windows 10 question or idea please post another thread so we can get back to you with a response. Thank you!