Newsbrief: Version 4.1 of the popular Unity game engine was released Thursday which, among other enhancements, it introduces multiscreen AirPlay support. AirPlay is Apple's protocol for allowing the streaming of audio and video from one of its devices to another. With this update, Unity games running on iOS 4.3 or later can be displayed on a receiver device such as Apple TV, while a user's iOS device is used as the game's controller. More information on Unity 4.1's features available in its release notes.