I've thought about this and there's two possibilities.
1. Not all the admissions decisions have been made (accept/reject/waitlist).
But then I think that can't be the case because if it were, then they have been releasing decisions when they haven't even finished reviewing all applications.
2. They've made all the decisions.
But then I'm left wondering why they can't just released them all at once. I know of no other school stretching it out over such a long period. This is the last school I'm waiting for, and they've given me the most vague of all timetables.