If you would like to know what is the latest and greatest update that has been released for OCS 2007 R2 we have now one stop shop to go and find out. We just updated this link with a RSS feed too. This is a great resource to keep updated on the cumulative updates that get released quarterly or so.

http://technet.microsoft.com/en-us/office/ocs/ee695846.aspx

Thanks to Iyaz Allah Baksh, Senior Program Manager (OCS), for providing this information.