6 tuners is surely getting a bit greedy. I'd hope there is some impressive scaled storage to go with it. You'd never be watching anything live again. But if it were to be able to output more than one show at once onto separate feeds, maybe it would be a centralised PVR to a household with the TV's in other rooms connecting simply by ethernet, rather than needing their own STBs?
Posted here as there is no indication this will be coming to Virgin Media