Bachchan, who plays the owner of a news channel called 'India 24/7' in the film, revealed the new development on his blog and has also put up a picture from the movie.
"The photograph is from my film that I shoot for these days - Ram Gopal Varma's 'Rann'. Yes... It is back to being called that since the title we wanted - 'India 24/7' is with another producer who refuses to part with it," Bachchan posted on his blog.
"This (the picture) is my character - Vijay Harshvardhan Malik, the owner of the TV channel "India 24/7". And that is where the story of this film unfolds, which is why RGV (Ram Gopal Varma) felt that "India 24/7" as the title of the film was appropriate.
"But since someone else has it and has refused to part with it, despite our requests, even though they have no intention of starting a film by that title, we felt we should leave the issue and move on giving the other producer our warmest wishes and greetings," he added.
"Rann" is Varma's attempt to "expose the Indian media" and apart from the Big B, it stars Paresh Rawal, Rajat Kapoor, Riteish Deshmukh, Manisha Koirala, Purab Kohli and Gul Panag.