A new document has been released providing a quick overview of the HyperV technology that is built into Windows 8. This is similar to the Windows 7 functionality, which was called XP Mode.
The document is a basic overview of HyperV in Windows 8, how it could be used, that requirements are needed, and how to enable the feature. It also provides a nice lot of links to more information on Tools, and some PowerShell Cmdlets, and also discusses RemoteFX functionality.
The document can be downloaded here – http://www.microsoft.com/en-us/download/details.aspx?id=36188