Ron,
The Type 1 trial started enrolling in early October,the Type 2 started a month or two after that.The trials take 6 month so they should have been seeing results trickle in for a couple of months now from the early enrollies(if that's even a word).
Here's a post on whether or not the trials are blind...
http://agoracom.com/ir/Mannkind/forums/discussion/topics/535740-today-s-trading/messages/1692292#message