Mumbai: Filmmaker Karan Johar will be back on the small screen as a host with the fifth season of "Koffee With Karan", but he has asked his fans to wait before playing the guessing game on the line-up. It was speculated that Pakistani actor Fawad Khan would be the first guest on the chat show. But Karan has asked all the eager fans to "wait for a formal announcement". He tweeted: "Watch out for our formal announcements on the opening episode and our line-up." The show will air on Star World and Star World HD. Meanwhile, Karan is seen judging the ninth season of "Jhalak Dikhhla Jaa".