This is pretty neat. It is geared for enterprise but still has some useful info for tech-minded home users. The fact that it is free is sweet.
If you don't already know (and I know you do), tomorrow is the big day.
Update: Here is a link directly to Microsoft courtesy of Earl: http://www.microsoft.com/downloads/details.aspx?SID=1053596-2-0-ARTICLE-0&familyid=EE2A1D38-88A9-43B3-95BC-7E962F0B6030&displaylang=en