I signed up to share some info in case it could help you guys.
I've got to know some of the researchers in the Media lab(met at conferences), and one of them told me that they need to shortlist the applicants by mid-Jan. Interviews will be conducted independently by each lab from mid-Jan to early Feb.
Also, if there's anyone interested in the Personal Robots Group, they say they are finding one ML researcher for NLP for the master's level.
Maybe I could delete this post for a random reason, but for now, I wish this info helps you guys. Good luck everyone :)