Microsoft have released a detailed guide to the new and improved features in the Windows 8 Consumer Preview.
In the document, they talk about AppLocker, BitLocker, Windows To Go, measured boot, Client Hyper-V.
From the download page:
The Windows 8 Consumer Preview Product Guide for Business provides a detailed look at the many new and improved features in Windows 8. The guide is designed as an accurate source of information that can help businesses understand how Windows 8 enables users to be ready and productive practically anywhere, allows for a personalized user experience, and provides IT with more secure, easy-to-manage intelligent infrastructure.
You can download the document (Windows-8-Consumer-Preview-Product-Guide-For-Business.pdf 555 KB) here