In June 2013, at the Apple Worldwide Developers Conference, version 5 of Xcode was announced. On September 18, 2013 Xcode 5.0 was released. It added support for iOS 7 SDK, with always support of OS X 10.8 Mountain Lion SDK but not the support of OS X 10.9 Mavericks SDK. This latest was only included in the betas version. It also added a version of Clang generating 64-bit ARM code for iOS 7. Apple removed support for building garbage collected Cocoa binaries in Xcode 5.1.