Courier Boy Kalyan’s official latest theatrical trailer released today. It is starring Nithiin and Yami Gautham in main lead roles. Actor Nithin will be seen as a messenger in the film. Gautham Menon is the producer of this film, and Premsai directs it. Karthik and Anup Rubens are the music composers for the film. The movie will hit the theaters on September 17th, 2015.