OK I know this is a couple of weeks old but may be of interest to folks who haven't seen it yet.
Microsoft Releases Tools to Deploy Windows 10 Technical Preview

A good measuring stick for Microsoft's confidence in the development cycle of a pending operating system release is when the company starts updating the tools used to manage deployments of said operating system. With the release of the latest Windows Assessment and Deployment Kit (ADK) overnight, it appears that the company's confident level is pretty high.
Microsoft is including one brand new tool specific to Windows 10 called the Windows Imaging and Configuration Designer (Windows ICD). Windows ICD allows you to provision an OS package that can be deployed to devices without reimaging them completely.

The actual ADK is here:
Download Windows Assessment and Deployment Kit (Windows ADK) for Windows 10 Technical Preview from Official Microsoft Download Center