The first build, number 11A4372q, was released for the iPhone 5, 4S and 4, along with the fifth-generation iPod Touch and new betas for the Apple TV and a beta of Find My iPhone. Apple also released the first build of the Xcode 5 Developer Preview.
Devices should be backed up using iTunes or through iCloud prior to installation of iOS 7, and following installation, can be restored through either process.
As usual, Apple warns developers that "pre-release versions of iOS are considered Apple Confidential Information and are subject to the terms of your iOS Developer Program License Agreement. Unauthorized distribution or disclosure of Apple Confidential Information is prohibited."
Download Links (Users must be a registered Apple developer to use these):
- iPhone 5 (Model A1428)
- iPhone 5 (Model A1429)
- iPhone 4S
- iPhone 4 (GSM Rev A)
- iPhone 4 (GSM)
- iPhone 4 (CDMA)
- iPod touch (5th generation)
- Mobile Device Installer Package
Article Link: Apple Releases iOS 7 Beta 1, Xcode 5 Preview to Developers
