I think it's complicated
Doesn't everybody in Europe, where the announcement was made, use Spotify? Is Pandora good with the Euro labels and copyright? I don't know.
In other words, this is a licensing agreement, the software details will doubtlessly be worked out and the choices provided later. Ahem. That's the Apple way. With a new entry in the market, keep it simple. Go for the most popular services. Look for technical glitches first. If that is a hit in the market, go on to version two. Add more. Rinse, repeat. I use my iPhone 5 in the car with bluetooth audio, and video on the tiny screen. It would be better to have a set up that could give me a larger, simplified touch screen. Sometimes my iPhone is a pain, hitting the little controls on audio, etc. Controls that were on a larger touch screen, with large buttons and simple controls, would be great.