"Anurag has been a great revolution in Indian cinema and the kind of films that he has been making and has been promoting, are creating a new audience and that is very exceptional and much appreciated," Amitabh told reporters here.
"Chittagong" is ready since 2010 and is finally releasing after facing many hurdles. There were reports that the film's release two years ago was stalled for the sake of "Khelein Hum Jee Jaan Sey".
Shah Rukh said he "wanted to be part of the film, but unfortunately it didn't happen".
"I am so happy that this film is releasing now. It's a very important film and I have heard a lot about it. It's an interesting piece of cinema and I wish all the best to it," he added.
Besides Bachchan and Shah Rukh, several B-town celebrities like Jaya Bachchan, Anil Kapoor, Sonu Sood and Vishal Bhardwaj were spotted at the film's premiere.
Directed by Bedabrata Pain and co-produced by Sunil Bohra, Anurag Kashyap, Shonali Bose and Pain, "Chittagong" features Manoj Bajpayee, Vega Tamotia, Jaideep Ahlawat and Alexx O'Nell.
The film, set against the backdrop of the Chittagong uprising of the 1930s British-occupied India, will release Oct 12.
Ashutosh Gowariker made "Khelein Hum Jee Jaan Sey" with Abhishek Bachchan and Deepika Padukone, on the same subject and it released in 2010.