As well as the Windows 8 Consumer Preview, don’t forget to evaluate the cool new features of Windows Server 8 Beta. It’s Cloud optmized, cost effective, more scalable and has tons of news features. Here are some key resources for you to evaluate Windows 8 Server Beta:

Microsoft Server and Cloud Platform – Windows Server 8 Beta
Windows 8 Server Beta Resources
Windows 8 Server Beta Capabilities
Windows 8 Server Beta for Developers
Windows 8 Server Beta Technical Documentation