Well, sort of.
I was automatically directed to what seems to be the
test page for the new design of Microsoft.com. At the moment it just looks like a slightly altered (and unfinished) rehash of the current one, though I expect that it's still a while off being done yet.
The main navigation definitely makes it easier to find things now, but I still think they need to cut down on the amount of information that's presented in the panels below the Silverlight feature.