Microsoft has finally released the beta for Kinect for Windows SDK which is available for download. This download includes device drivers for Kinect as well as APIs, documentation for installation and some other resources too. Kinect SDK is helpful for developers, academic researchers and enthusiasts in order to take the full advantage of Kinect on your PC so that you can create incredible software projects utilizing natural user interface (NUI). Kinect provides its audio technology, skeletal tracking, and system application programming interfaces and a direct control to its sensor so as to help the developers.
You can enjoy the video shown by Channel 9 which is being broadcast Live today and also there is a Kinect Project page which is having some of the already made projects from the developers.
Download the SDK here | Documentation.