Hello,
I see that you are a bit anxious!
I am most probably going to attend Berkeley next year. The AS&T program is built in such a way that you won't be competing with anyone else in the program, with each student sometimes being in completely different fields/departments. The program is tiny, with individuals selected by particular professors who seem interested in them, ergo, it's incredibly tough to get in. I'd be surprised if you haven't heared anything from anyone yet...
Anyways, good luck making a decision, Berkeley is great, but there are others...