I don't know if this move by Citrix is possibly in response to the upcoming Longhorn release, but it is certainly looooooooooooooong overdue. I've been wanting to install and mess around with PS4 for ages at home, now I finally can!
Perhaps they have finally realised that putting Enterprise software in the hands of enthusiasts pays off... those kinds of people are often the ones engineering / architecting solutions. If not for this developer license program, I would have thrown myself into Longhorn Terminal Services and had a fairly one sided view... now I'll be looking at it with a much more critical eye.