This is a pre-release version of the complete Xcode developer toolset for Mac, iPhone, iPad, and Apple Watch. This release requires OS X Yosemite.
New in Xcode 6.3 beta is a Swift Migrator from Swift 1.1 to Swift 1.2 and numerous enhancements to the Swift language. Developers can find the full list of improvements to Swift in the Xcode 6.3 beta Release Notes.
The release comes alongside Apple seed of iOS 8.3 beta.
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