Apple releases iOS 8.4 beta 4
But you don't want to know that. You want to know all about Apple's new streaming music service. Well, we can tell you that...it is not a part of iOS 8.4 beta 4. Neither is the Beta Radio or the Connect artist interaction feature. What you will find is the revised UI for the Music app.
Besides the revamped Music app, iOS 8.4 beta 4 allows for audiobook playback via iBooks and CarPlay. And the iPhone offers iBooks Author textbook support. In addition, as we told you earlier today, iOS 8.4 beta 4 eliminates the "Messages bug." By sending a specific string of Arabic letters and characters from one iPhone to another using various messaging apps, the recipient's handset could crash while in the lock screen
Those who previously tested the previous beta version will receive iOS 8.4 beta 4 via an iOS update. And iOS 8.4 beta 4 is also available from Apple's developer center.
source: 9to5Mac via Forbes