You can now download the latest Community Technical Preview of our Domain Specific Language Tools for Visual Studio 2005 Beta1.  With this release, you can create both a domain model and fully-fledged designer integrated into the IDE.  The attendant documentation will take another few days to propagate through the pipeline onto the workshop page on MSDN.
 
I'm really excited about this release as it’s the first one where there are enough moving parts available for customers to build something real.
 
Who's going to post the first screenshot of a working designer?