Unveiled during Microsoft's annual Build Conference in San Francisco, Unity will deliver the commercial version for its "Windows Store Add-on", now included in Unity 4.2 Release Candidate 1, with a commitment to ongoing support and innovation for Microsoft platforms. Under agreement with Microsoft, Unity Pro 4 licensed developers will receive a free license for the "Windows Store Add-on" once available this summer, a $1,500 value. The "Windows Store Add-on" includes support for both Windows Store apps and Windows Phone 8 apps. In addition, Unity will develop tools for the Xbox One entertainment system, including support for many next-generation features such as enhanced Kinect gestures and recognition, multiplayer matchmaking, SmartGlass and the unlimited power of the cloud. Developers who build games published by Microsoft Studios will have access to Unity tools for Xbox 360 and Xbox One free of charge. Read the full story here.