If you are a enterprise customer then here is an opportunity for you to test out the upcoming SP1 beta for Windows 7 and Windows Server 2008 R2. 

Caution: This beta is not supported for home users and does not provide any new end user features.  Microsoft will not provide any technical support if this is installed on any consumer machines. 

For those business customers who want to try this service pack beta out in their enterprise you should be aware of a couple of things about this download:

In order to download and install the Windows 7 and Windows Server 2008 R2 SP1 Beta you must currently have a Release to Manufacturing (RTM) version of Windows 7 and Windows Server 2008 R2 already installed.

To learn more about SP1 Beta and Windows Server 2008 R2, visit the SP1 Details Page

You will have to register to have access to this download.