Apple today seeded the third beta of iOS 8.4 to registered developers for testing purposes



From MacRumors:

Today's beta is also available to public beta testers. The beta, build 12H4098c, is available as an over-the-air download and through the iOS Developer Center. Apple has also released Xcode 6.4 beta 3 to developers. iOS 8.4's major feature is an all-new Music app that includes a revamped look. The Music app's new design shows pictures of artists in the Artists view and it offers a new MiniPlayer with a redesigned look for "Now Playing." There are personalized playlists, global search capabilities that make it easier to search within the Music app, and a streamlined design for iTunes Radio to bolster music discovery. The first two iOS 8.4 betas had long lists of bugs associated with the new Music app, which Apple has been working to resolve with subsequent betas. It's likely the third beta includes several fixes for lingering issues to make the Music app more stable.

  Apple Seeds Third iOS 8.4 Beta With Revamped Music App to Developers, Beta Testers