Newsbrief: Microsoft has released the software development kit for Xbox SmartGlass, allowing partner developers to integrate the new technology into their projects. Unveiled at E3, SmartGlass enables users to interact with games or other media on their Xbox 360 with other devices like tablets and smartphones (iOS, Android, and Windows Phone are all supported). Microsoft Studios has said already said that all of its future first-party titles will offer SmartGlass support, but now other developers can download the kit. The SDK includes SmartGlass Studio, a JavaScript library, and sample code. The company will roll out its SmartGlass feature this holiday season.