MacRumors posted a story that Apple today seeded Xcode 7 beta 6 to registered developers

Xcode 7 is designed to accompany Apple's next-generation operating systems: iOS 9, OS X 10.11 El Capitan, and watchOS 2, all of which will be released to the public in the coming weeks. Xcode 7 supports Swift 2.0 and includes new features like user interface testing and updated playgrounds.

  Apple Seeds Xcode 7 Beta 6 to Developers