Digital Spy has learned from Virgin Media that no date has currently been set for Channel 4 HD to launch on their cable service.
However, they make the point that a number of Channel 4's high definition shows, such as Desperate Housewives, Ugly Betty, Brothers & Sisters and Studio 60, are already available in high definition via their on demand service.
(Via Digital Spy)

This is just getting embarrassing now for Virgin. How they can justify selling an HD service without any channels (remember BBC HD was only a trial until recently) is beyond me. OD? Does that stand for Out of Date? Because that's all there is on Virgin OnDemand - out of date shows.