KBC is the Indian version of the UK game show 'Who Wants to Be a Millionaire?'. It was first aired in 2000, and marked Bachchan's TV debut.
While Shah Rukh Khan featured in the third edition, Bachchan later returned to anchor the fourth and fifth seasons.
With 'the power of knowledge' as the central theme, the makers of the show today announced 'Sirf Gyaan Hi Aapko Aapka Haq Dila Sakta Hai' as the communication theme for the sixth season.
"The challenge was how we should take the philosophy to the next level. We came up with 'Gyaan hi aapko aapka...' because it is a great factor to empower people. One of the most important parts of the show is how do we democratise the entire KBC," said Danish Khan, Senior Vice-President and Marketing head, SET.
Bachchan underwent an abdominal surgery in February and was advised rest for sometime. Earlier there were reports that he might not host the show.
"There is nobody like Mr Bachchan. His appeal transcends across all age groups. He can relate and connect with people of all backgrounds. His command over the language - both Hindi, English and many other local languages, his humility and sincerity are the factors that drive his popularity," Khan said.
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The show will be aired on prime time on Sony.
"We can't tell the exact slot as we are brainstorming the right time. But certainly it will be a prime time slot," he said.