According to our sources the director believes that this helps in creating an intrigue and interest amongst the audiences relating to the movie.
The director is at the moment busy filming his upcoming venture Enthiran in Chennai.
The location of the shooting is also kept very secret and hence making sure that the media doesn't succeed in clicking any more pictures from the shooting spot like they did the last time around.
Shankar is having some novel ideas to show Rajini in a completely different style which is to be a revelation to Superstar Rajini's fans. Maybe this can be an added reason that he is keeping all secret.
The shooting of the flick is progressing smoothly and we would eagerly be waiting for the release of this film.