It seems to be taking a while for the framework to propagate to more independent arms of the government; as well as your example, for the (e.g.) DVLA a lot of the top level information-only pages are in the new framework (and also reside on www.gov.uk), but if you click any link to a form you get taken to the DVLA subdomain (motoring.dvla.gov.uk) and the difference is stark.

For the DVLA the site isn't so bad, but I definitely get that slightly disconcerted feeling that something is going to go wrong while you're filling out this important, official form? Which I don't get at all in the new framework.