He explicitly states "But now you can search and stream the millions and millions of songs that we have on iTunes". He then goes on to say again that you can search and stream any song you want.
If that's the case, they've done a horrible job of making that clear on their website. They should just come out and say that. But they don't, instead it's this confusing thing with different names.
Also, there are going to be some artists that are going to be pissed that their music is being streamed if they didn't give explicit permission for it. As I asked before, have they even given artists the info about what royalties they will get from streaming?