After a year or two, Microsoft Research has released a research paper on Xen, a .Net based programming language design to work with well with XML. Here is an simple example of what changes in the language:

public class card {
    sequence{
      string  name;
      string  title;
      string  email;
      string? phone;
      logo?   logo;
    };
  }

  public class logo {
    attribute string url;
  }

  public class Test {

      static void Main() {
        card c = <card>
                   <name>John Doe</name>
                   <title>CEO, Widget Inc.</title>
                   <email>john.doe@widget.com</email>
                   <phone>(202) 456-1414</phone>
                   <logo url="widget.gif"/>
                 </card>;
        c.*.{ Console.WriteLine(it); };
      }
  }