I've just upgraded to CS6 in order to use the control surface functionality.
In Jason Levine's video (see http://www.youtube.com/watch?v=eKT20GmFS1E at 00:27) and here in the CS6 detail highlights it states that EUCON is supported and connects via the preferences >> control surface >> drop down.
I don't appear to have it. See image.
Anyone know what happened to it, as I purchased the upgrade from CS5.5 specifically to use the Euphonix surface?