ConfigMgr R3 is now RTM. Go down to your corner Sofware Assurance store and pick it up. Really it might take a week to filter to the different SA websites for your Company, State, or Federal website. Hopefully you have already been reading up. If not here is the information:
http://blogs.technet.com/b/systemcenter/archive/2010/10/14/system-center-configuration-manager-2007-r3-unleashed.aspx