Oh yeah, as announced by Steve Ballmer at CES, Kinect for Windows SDK is now available for download.
The Kinect for Windows SDK will allow developers to create applications supporting gesture and voice recognition on computers running Windows 7 , Windows Embedded Standard 7 and Windows 8 developer preview .
You can download the SDK from KinectWindows.com where you can find the system requirements and the installation instructions.
More details are available on the Kinect for Windows Blog.
Mary-Jo Foley has also written a post about the new features on the Kinect for Windows.
Hurry up ! Install the SDK and happy coding