The Aditya Chopra's home production will be directed by Vijay Krishna Acharya of "Dhoom 3" fame.
"There have been many attempts (by filmmakers) for us to be working together and we will now work in 'Thugs of Hindostan'. I look forward to this opportunity.
"Aamir Khan is a great star, a great actor. He is ruling the box office today and for many years. I feel fortunate to be working with him," Bachchan told reporters here at a press conference on the occasion of his birthday.
"'Sarkar 3' is the continuation of the series and the brand. The premise is same, some characters will change because some of them have died in 'Sarkar Raj', so they won't be seen," Bachchan said.
"The third part will carry forward from the second part, the premise is same. It's a new story. There will be some new additions to the film. There will be new artistes. We will start shooting for the film in a couple of days," he added.