In this beta version Apple integrated Apple Music just like in iOS 8.4. Apple has finally delivered the News app that they revealed at WWDC. Now on iPads they have 4x4 folders instead of the 3x3 introduced in iOS 7. Across all devices there are new photo libraries called "Selfies" (for all pictures taken with the front facing camera) and "Screenshots" (for all screenshots). We expect Apple to issue updates every two to three weeks.
Information here was gathered from our own observations on an iPad Mini and MacRumors post here: www.macrumors.com/2015/07/07/ios-9-beta-tidbits/