I found this over at
www.beyoundunreal.com
QAPete: How about it, guys? Dedicated server in our future?
Scott: All support you need for a standalone dedicated server is included in the release. As a dedicated server needs the assets, there would be nothing to be gained by a seperate "dedicated server" release which would be almost identical to the full install.
So the patch and CD 2 is all you need for dedicated install.