Apple has just announced that its recurring subscription plans will not only be available to magazine-type apps. Any content-based app, such as Hulu, Netflix or Spotify will be able to take advantage of Apple's App Store billing system.
The plot thickens, though: Apple has mandated that all content-based subscription services must enable in-app sign-up. In other words, if Hulu Plus is available for $7.99 from the Hulu website, users must also be able to sign up via the Hulu iOS app.
Apple, of course, will take its usual 30% cut of all subscriptions that originate from within iOS apps.