Finally it released, see my previous post http://blogs.technet.com/cliveeastwood/archive/2007/11/05/operations-manager-2007-service-pack-1-release-candidate-released.aspx
KB94443 list the issues documented in released KB articles which are corrected in the SP1 Release Candidate. Note: The KB are does not currently reference some of the articles awaiting release which I covered in the posting above. The "to be released" articles are taking waaay to long to get through the publication process. As they appears I'll have them added to KB944443.
Here's the link http://support.microsoft.com/kb/944443