Makers of Kangana Ranaut and Imran Khan starrer `Katti Batti` released the video of a new song titled `Sarfira` on Wednesday.

New poster and song stills were unveiled ahead of the launch of `Sarfira` party song.

Rumours are rife that Kangana, who has won accolades for her double role in `Tanu Weds Manu Returns`, will enter the same territory in this film. If the latest buzz is to be believed, Kangana will be seen in a double role as Payal and Bijlee in `Katti Batti`.

Kangana has also donned the hat of a cinematographer in `Katti Batti`. She has directed the first seven minutes of Nikhil Advani`s directorial. It was shot in one take.

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Kangana and Imran have paired up together for the first time and the film is touted to be a contemporary love story. Post the disastrous `Gori Tere Pyaar Mein` (2013), Imran will be seen on screen after a gap after 2 years as he was on a paternity break to welcome his little girl Imara.

`Katti Batti` is slated for release on September 18, 2015.