I emailed them to ask for my application status, but no reply at all...
Many of my classmates have received postal rejection letter, but nothing for me....
What's going on?
Any person who have not yet heard back from MIT Physics
explanation
I am in the same situation. I called them to try to figure out why I have not heard back and they told me that I am still under consideration for their final round of spots. I don't know if this is literally what they mean, or if they meant that I am on some sort of waiting list. Chances are, if you haven't heard, you're also still under some sort of consideration.