Writing a new Programming Language??

If you are planning to write your own programming language, now you don't have to worry about writing an IDE for it. When Visual Studio 2008 gets released, it's Shell can be reused for your language seperately.

It can even be used as a completely seperate design layer if you want. This is perhaps the most extensible Microsoft's IDE has even been. Started with the ability to use Add-ins in the old Visual Studio to a completely reusable IDE is a big step forward.

And did I mention, this is free!!