i gave test in peshawar and i also received interview letter today and interview will be on 21st october at 2 p.m, i think not from karachi but candidates from all over country have been called for interivew as some of karachi candidated have interview on 22nd october and i am from kpk and mine is on 21st october, and other thing is that if they have sent the interview letters so they won't upload the result on NTS website, and its not rumor, i received letter through Leopard Courier service., Good luck for interview...