The Windows 8 Release Preview and Windows Server 2012 RC Compatibility Cookbook provides information about changes to and new features of the Windows® 8 client and server operating systems. It provides guidelines for developers to verify the compatibility of their existing and planned programs with the new operating systems.

Windows 8 Camp in a Box, Consumer Preview Edition includes the hands-on-labs, presentations, samples and resources from the Windows 8 camps. The Windows 8 camps are free training events for developers ramping up on Metro style app development.

Developers may want to download them!