This was an unofficial group for discussing the Swift programming language. As of December 2015, with the open source release of Swift, Apple has created its own official mailing lists, so I'm closing this group.
To discuss the Swift language itself, please subscribe to swift-users.
To ask about using Swift with Apple's Cocoa frameworks (e.g. UIKit, AppKit…) on iOS and Mac OS, please join Apple's cocoa-dev mailing list or developer forums.