Niner since 2009
CTP5 is very nice. I've been using it now for a month on a project and it's working so far. Despite some of its limitations, it's actually just enough for a fairly elegant domain model. I'm very excited to see what's new in the RC!
Seeing this makes me so happy. I'm an avid modeler and have been waiting years to see this integrated into VS by Microsoft. I just can't wait!
Sometimes I feel jealous about it too, because now many developers will have ubiquitous modeling tools within Visual Studio... It's like when your favorite band hits the big time... /sigh