hi there... i am currently at MGH... and i can tell you, their's was the last interview I got (i think last week of november)... so keep on waiting, and if you don't hear from them by the 3rd week of november you can always call them and give them a silly excuse like: Hi, i am an applicant, and I will be in boston interviewing at the Brigham - can I schedule my interview at the same time, etc...
good luck - by the way, i love my program