its going to be 2006 before anything comes out, sky will sell the hdtv sets with there new signal. Not many people care about hdtv as there is nothing broadcast in HD yet so theres hardly any demand.
you can get an LCD or plasma tv, most of these are HDTV aware but they are still expensive.
i think im going to be using my normal tv myself or my monitor if i can, as theres no chance i can afford a 360 and a hdtv any time soon.