The writing is on the wall, you did not get in. They already sent out acceptances and waitlist notifications many many days ago. There is a slim chance you may get a last-in-line waitlist spot of which you still would have little to no chance of getting in. Prepare your mind to go to whatever mickey mouse safety school that was nice enough to take an oblivious nincompoop like yourself.

"It seems that I have not seen anyone who has received the official reject e-mail."

People somehow prefer to share their successes not their failures. Also, how does archinect know if Berkeley made ALL THE DECISIONS already, isn't that something Berkeley should/would know? Maybe try contacting them.