sanlitun
Do the MIT interview invites trickle in according to the area the candidates are based in ? I heard that the adcom goes to certain cities and conducts all the interviews themselves...
If R1 is anything to go by, they tend to send them out in batches according to the city. All interviews are done by the adcom.
Don't give up all hope if your city seems to have already been called, MIT Sloan do say that they can call you for interview "at any time" and may do a phone / Boston interview with you close to the decision deadline.
Good luck to those of you who've been invited, and fingers crossed for those still waiting...