Windows ADK for Windows 8 Release Preview
Download Windows Assessment and Deployment Kit (ADK) for Windows 8 Release Preview, and start some hands-on training how to best deploy a future roll-out of Windows 8 to end users' workstations. The Windows Assessment and Deployment Kit is a collection of tools that you can use to customize, assess, and deploy Windows operating systems to new computers. Windows Deployment is for OEMs and IT professionals who customize and automate large-scale installation of Windows.
Download it from here - http://www.microsoft.com/en-us/download/details.aspx?id=29929