Kangana will be seen in a double role as Payal and Bijlee in Nikhil Advani's directorial, which also stars Imran Khan.
However, the filmmakers are tight lipped about the project.
"Everything on 'Katti Batti' is kept under wraps, no one is revealing the details of the film apart that it being a love story," a spokesperson said in a statement.
"Katti Batti" will release in September.
Meanwhile, Kangana is still basking in the triumph that came her way after "Tanu Weds Manu Returns", in which she has played role of a married woman and Haryanvi athlete. She had earlier mentioned that the role in the Aanand L. Rai directorial turned out to be a challenge for her.
Produced by Eros International and Colour Yellow Productions, the sequel to the 2011 entertainer "Tanu Weds Manu" focuses on the rediscovery of love between a married couple.
Also starring R. Madhavan and Deepak Dobriyal, the film has amassed over Rs.165 crore worldwide.