Microsoft Deployment Toolkit 2013
Microsoft Deployment Toolkit 2013 is the newest version of the Microsoft Deployment Toolkit and offers support for the deployment of Windows 8.1 and Windows Server 2012 R2, as well as Windows 7 and Windows 8. Download the toolkit, explore what else is new in MDT 2013, and find quick start guides to help you get started at www.microsoft.com/mdt.
Download the latest deployment tools, which include support for Windows 8.1: Microsoft Deployment Toolkit (MDT) 2013, Windows Assessment and Deployment Kit (Windows ADK) for Windows 8.1, and System Center 2012 R2 Configuration Manager.
For help with Windows 8.1 you can go to the Spingboard Series for Windows 8.1 on TechNet