Xamlon, the product (and company) of my old friend Paul Colton, just reached Beta 4. As I wrote before, Xamlon is a XAML engine that runs on Windows 98 through Windows XP. And XAML is the user interface development language for Longhorn.
In addition to the new beta release, Xamlon-the-company now has sponsored a community blog site about XAML at XAMLBlogs.com. This means that Paul finally has a blog (subscribed).
The big news on the blog at present appears to be the members’ participation in the XUL Grand Coding Challenge. The screenshots and sample code on the blog show some really interesting UI stuff created entirely with vector graphics declared in XML.