"She is at a more than ready stage in her career to essay a complex role like this. We have been working on her look and prepping for the film," Aanand L Rai said in a statement.
Meanwhile, PTI reports that the shooting of the yet-untitled film has been stalled as on Sunday, a portion of ceiling collapsed on the film's set. Two crew members suffered minor injuries in the incident. The shooting will resume next week.
Co-produced by Shah Rukh Khan's Red Chillies Entertainment, the film is scheduled to release next year on Christmas.
SRK, Katrina, Anushka's Jab Tak Hai Jaan, was the last film directed by the legendary filmmaker Yash Chopra. Anushka received Filmfare Best Actress trophy for her role in the film.
Shah Rukh and Anushka are awaiting the release of Imtiaz Ali's untitled film. It hits the screens on August 11. Anushka debuted opposite SRK in 2008's Rab Ne Bana Di Jodi.
Actors Ronit Roy, Deepak Dobriyal and Zeeshan Ayub form the additional cast of Aanand L Rai's film.
(With PTI inputs)