Hmm, the 10SelfIC and 10SelfUC would seem to be, pretty much, direct HST replacements- for those who doubt, 8*26=208m, and 9*23m=207m. I would guess that an "Inter Urban" layout may be similar to the FGW high-density or the XC layout, with "Inter City" more like FGW West, MML or NXEC?
The choices of example destinations is a bit alarming, given the 5-units are both marked "Co" for commuter-layout.
Good things! clearly, lessons have been learned from the Voyager loos- the 10- units work out at a space-saver per carriage plus the two disabled (though I bet that won't be the arrangement).
On the 10Self and 10Bi- what's the betting the Quiet Coach will be next to the diesel power head with motorised bogies?