I wrote about Xen earlier. It's C# extended with features to really integrate XML into the language. Microsoft has now announced that it will actually release this language within the next six months and renamed it to C Omega. This article on Microsoft-watch tells us about this but it's unclear if the language will be called C Omega or X Omega because those are mixed within the article... MicrosoftWatch: "Within the next six months, Microsoft Research Cambridge plans a research release of Xen. When it goes live, Schulte said, the language will likely be called X Omega (Note: Microsoft will use the symbol for omega, which is the last letter in the Greek alphabet). Other research organizations and universities will be able to play with X Omega, but won't be allowed to use it to develop real-world applications, Schulte added."