This is pretty awesome!!! Used it to go from quantal to raring.There is a standard method that we used when the new development cycle started. We took an updated Quantal and changed the software sources/repositories to Raring.
This is how I got my Raring install in the first place back in November. and being unable to get a Raring ISO image to work I converted a second Quantal just the other day. A lot of updates need to be done but it will still work.
That changes the repositories. Follow it with the usualCode:sudo sed -i 's/quantal/raring/g' /etc/apt/sources.list
Code:sudo apt-get updateI am planning later today to install Gnome Remix. That will be Quantal and then use this method to convert it to Raring. If it does not work in this case I can easily re-install the 12.10 Remix.Code:sudo apt-get upgrade
Thanks for sharing.