The final bits of Windows Server 2008 R2 (RTM Build 7600.16385) are now up on MSDN and TechNet Plus. TechNet Plus and MSDN subscribers can now download and evaluate Windows Server 2008 R2 before the official public availability in October.
Windows Server 2008 R2 is the next version of the Windows Server operating system from Microsoft, building on the features and capabilities set of the current Windows Server 2008 release version.
Here are the screenshots from Windows Server 2008 R2 Enterprise x64 Release Candidate (Build 7100).