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Pricing is $9.99/month or $7.99/month if you sign up soon (I think he said in the first 30 days).

7.99 if you start the trial before June 20th or so.

I don't see where you can sign up at all.

This gave me an option to sign up. I can play music through the web, but there's no update to the phone app yet.

They noted that the launch is today, but it may not be live yet. Probably in the next few hours, now that it's been announced.