The 75-year-old actor, who has a guest appearance in the movie, took to his blog to make the announcement.
He also shared a look test in which he can be seen sporting a long grey hair and beard.
“Dear friend Chiranjeevi, that majestic superstar and icon from the world of Andhra and Telugu cinema, requests for a guest appearance in his magnum opus, on a most valiant period character that he portrays, and I agree…
“So am off to begin its shoot in Hyderabad… In a few hours… the first look tests of which seem to be somewhat, thus… These are not the final, but close,” Bachchan wrote.
The veteran actor added that he is getting such roles as he is in the winter of his life.
“… To bring in a character, attempt to put me in situations that resemble the above… Cannot really deny their choice… The days of yore are over… I mean they could never be reborn as this for example.”
A long white beard and the heavily wrinkled face have led us to believe that Big B will be appearing in the role of an old man in the film.
Bachchan will next be seen in 102 Not Out playing father to his 75-year-old son, portrayed by Rishi Kapoor.
This will release in May 2018 and will reunite him with Kapoor onscreen after a gap of twenty-seven years. In October 2017, it was announced that Bachchan will appear in Ayan Mukerji’s Brahmastra, alongside Ranbir Kapoor and Alia Bhatt.
He is also filming Thugs Of Hindostan with Aamir Khan, Katrina Kaif and Fatima Sana Shaikh which is set for release in November 2018.