In case you have not seen on other blogs the long awaited System Center SP1 bits are downloadable via MVLS now
more blog post to come as I update my lab and any thing I new I setup in Production.
Make sure to follow the upgrade Sequence – http://technet.microsoft.com/en-us/library/jj628203.aspx
Update 1/30/2013: I don’t recommend this as a primary way to install the SCCM agent on computers now that there is a supported solution from Microsoft, this was just a temporary workaround until SCCM SP1 was released.
In this blog post I’m going to document the high level steps to get the SCCM agent (Pre beta 1) on Server 2012, Windows 8 and this can be used also as a secondary method to catch any machines that didn’t get the agent installed by client push or WSUS depending on your main deployment method for the client.