Apple Insider: Apple's Open Secret: SproutCore Is Open for the Web

http://www.appleinsider.com/articles/08/06/16/apples_open_secret_sproutcore_is_cocoa_for_the_web.html
"One of the biggest revelations at WWDC was quietly unveiled in a session on Friday morning entitled "Building Native Look-and-Feel Web Applications Using SproutCore." While Apple maintained high security during the entire NDA-sealed WWDC session, the secret of SproutCore is out because it is an open source project and people can't stop talking about it."