Just in case you missed it, the folks on the System Center blog announced that the OpsMgr 2007 R2 beta is now available for download. 

For details on what's new and how to get it see http://blogs.technet.com/systemcenter/archive/2008/11/20/operations-manager-2007-r2-beta-now-available.aspx.

J.C. Hornbeck | Manageability Knowledge Engineer