I use iPhone 4s for work and Android (Nexus 5) for personal. What sets the music capacity in the iPhone so far apart from Android? I use Google Play Music on my phone and if I had an Android tablet I would do the same. I hate iTunes for music and I am certainly not alone in that regard. Maybe I just don't take my music listening as seriously as others.
I use Apple products for everything except my personal phone. I like the freedom Android offers. And I don't use iPods. I don't see enough of an advantage to carry another advice opposed to just using my Android/iPhone.
The big advantage the iPhone has always had was the smoothness that its OS runs with. This was mostly due to the fact that they don't allow the provider (Sprint, AT&T, etc.) to jam the phone up with crapware. Now that I can buy my Android straight from Google and bypass all that SHIT that Samsung/your provider put on it, it kind of negates that advantage the iPhone had.
I don't hate either side, I just prefer the Nexus 5 to the iPhone and don't see anything in this new release that would give me a real advantage in switching.
Probably won't be anything to get most people to switch. Those invested in the Apple world will stay there, and the opposite as well. It will be interesting to see how many of these old Android phones all of a sudden see a spike in use because Apple lays the groundwork to bring many more vendors into the NFC loop.