Yesterday, Microsoft released the OpsMgr R2 RC on their connect website. It's version 6.1.7043.0 and is 1.277,26 MB in size ! As a separate download, you can also get the R2 RC documentation set. The following guides are included: Operations Manager 2007 Supported Configurations Operations Manager 2007 R2 RC Design Guide Operations Manager 2007 R2 RC Deployment Guide Reporting Deployment and Usage Troubleshooting Operations Manager 2007 R2 RC Upgrade Guide Operations Manager 2007 R2 RC Security...(read more)

Read the complete post at http://scug.be/blogs/scom/archive/2009/03/27/operations-manager-2007-r2-release-candidate-available.aspx