Leave it to gonk to further clear up the situation.

I had completely forgotten about the multichannel sources.

Here I thought that SACD and the other multichannel CD formats were almost dead and it sounds like the HD DVD specs will bring them back to life, at least for the near future.

One thing I hope they change with HDMI is the connector. From what I've read it really needs to be made so it locks in somehow as it's pretty easy for current HDMI connectors to fall out or be pulled out.