Regarding HD-DVDs, while the technology is available, they will still need to convince the movie studios to get onboard, and THAT's probably the biggest obstacle to HD-DVDs. IMHO, a one-year forecast for that to happen is nothing more than a pipe dream. Even if it happens really soon like say 2-3 years, it'll probably be very expensive for a long while yet simply because the studios won't want to kill their current DVD cash cow quite so quickly. Also, the market for HD-DVD will still be a niche one, so that's one more reason to keep them from wanting to make their precious film librarie available on HD-DVD.
Of course, if money is no object, then the potential for DVI to be required by the final HD-DVD spec does present something to consider. But then, if money is no object, you could just buy a new and better(!) display IF and WHEN it happens.