T-Mobile CEO, John Legere, in a blog post on the T-Mobile site:
First, we’re amping up Un-carrier 6.0, Music Freedom and adding Apple Music to our list of 33 services that stream totally free on T-Mobile. Apple Music has become the single most requested new addition to Music Freedom and counts for a full 80% of the requests coming in via Twitter. I heard every one of them, so it’s happening right now!
Music Freedom sounds like a great idea on paper, until you realize it spits in the face of Net Neutrality by offering preferential treatment to certain types of traffic and only to certain services. I want to like T-Mobile, because they're trying to shake things up in an industry that's infamous for treating customers like adversaries and trying to squeeze every last dime out of them (also, Legere is one of the most entertaining CEOs out there). Sugarcoating preferential treatment of Internet traffic as "freedom," though, is scummy bullshit. They still have some ways to go to break free from their roots.
Legere also announced changes to their upgrade policy for iPhones, so people can upgrade from a newly-purchase iPhone 6 to the next generation of iPhone when it's released, at no extra cost. I think that's interesting, because it shows that Apple still have considerable sway in customer purchasing decisions when it comes choosing carriers. Or at least T-Mobile thinks so. We'll see how it plays out.
Regardless, you don't see them announcing special options for Android devices.