C#..., What's Next?
It is X# or XEN which is coming next after C#.
Here is a link to a research project by Wolfram Schulte, who is working on XEN.
XEN contains all of the C# specification So it’s an extension of what we already use to develop code.
http://www.research.microsoft.com/~emeijer/Papers/XML2003/xml2003.html
Cheers!