The iOS Beginner Project is rewrited using Swift, which Apple writed with Objective-C. After you run the project, you will see a TodoList app.
It's wirted in Xcode 6 GM, and based on Swift Language.
The offical guideline URL: https://developer.apple.com/library/ios/referencelibrary/GettingStarted/RoadMapiOS/index.html
Thank you, Changwei Zhang