This is a pre-release version of iOS 9 for iPhone, iPad, and iPod touch. Devices updated to iOS 9 can not be restored to earlier versions of iOS.
Some known issues include:
● Lighting video dongles don’t work with this beta
● Your iPhone may indicate that Activation Lock is turned on for your Apple Watch when it is not
● Calendar Time to Leave alerts may not be sent.
● In this beta, FaceTime calls do not connect on iPhone 6, iPhone 6 Plus, or iPad Air 2
● iCloud backups will incorrectly report a backup size of 0 bytes in Settings
● Some devices crash on connection to Instant Hotspot.
● The Music tab is not displayed in the Music app
The build number is 13A4280e and developers can download it from the link below.