One of my first thoughts about the recently announced Windows 10 S, was the lack of iTunes being an issue. Apple is not known for bringing their apps to other platforms.
I imagine there was a back and forth chat playing Apple and Spotify off against each other.
I hope they do it properly but I have a suspicion they will do the minimum. I’d like to see something new with Live Tiles and covert art. I imagine when they break out iTunes into Apple Music, Videos and Podcast app on the desktop, they will eventually come across as Windows UWP apps.