From Bryston Engineering:
The HDMI interface looks very promising, it supports both hi-res audio and video.
It is also compatible with DVI.
It is backed by some major electronics companies.
It also is very new, final details were released about 6 months ago, there is still very little equipment out there with HDMI support, but this may change quickly.
Some very expensive widescreen projection and plasma tv's. We'll have to wait and see if it becomes popular.
I guess it will make sense to do some further investigation into this interface.