Will Microsoft kill DVD-A and SACD?

There are two new paradigms that Microsoft is trying to dominate: peer-to-peer computing and media. (You can quote me on this.) I could wax eloquent on this but I'd have to bill you.

Anyway, Microsoft has purchased HDCD technology and licensing.
http://www.hdcd.com/default.asp
What effect will this have on the new hi-res formats? Will HDCD now replace these other formats since it has the backing of the folks from Washington State?