I'm in the same boat as you. My advisor says that it's still an early stage of admissions, and the notifications that have already been sent out are very early ones. I'm sure we're all uneasy, but my advisor's comment only lead me to think that I should expect more waiting. Let's cheer up, team!
You don't know what computational linguistics is, yet you want to pursue a Ph.D. in it. I don't think that is reasonable.
Get to know what you want to do before you decide if you want to go to a graduate school for that.
Do some research: from a simple googling to going to your school's library. Information is everywhere.
All of your questions is to be answered by your own doing.