They had an info session online today for people who were admitted. Some of things talked about was the class sizes and deadline to accept which is in April. I'm guessing there won't be much movement on the wait-list until people start rejecting their offers sometime in the next 2-3 weeks.
If I remember correctly, they said something like the class size was 75-100 new M. Eng students a year with half of them being FE. There wasn't any indication as to how many of the admitted people accepted but there were around 35 people in the chatroom. (Though that could just be a product of it being at 10AM EST time)