Got this from my manager this morning:
Apple today seeded the third beta of iOS 8.4 to registered developers for testing purposes, two weeks after seeding the second iOS 8.4 beta and three weeks after releasing the first iOS 8.4 beta. iOS 8.4 has been in testing since mid-April, following the early April release of iOS 8.3. The beta is available as an over-the-air download and through the iOS Developer Center. 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. iOS 8.4's redesigned Music app comes ahead of the rumored debut of a redesigned streaming music service that may make an appearance at the Worldwide Developers Conference in June. The upcoming streaming music service is said to be similar to Apple's existing Beats music service, but with a rebranding, a redesign, deeper integration into iTunes, and a focus on exclusive content
