Dharma head honcho Karan took to his social media to announce the film through a 2D motion graphics animation video.
Touted to be a love story, the movie has been titled Rocky Aur Rani Ki Prem Kahani.
Sankaran Nair had fought against the British Raj to uncover the truth about the Jallianwala Bagh massacre.
Karan Johar's response came after an old video from a star-studded party at his residence resurfaced on social media.
Titled 'The Big Thoughts Of Little Luv', the book was announced on Instagram and Twitter with a clip by Johar, who has avoided social media for a while.
Reports surfaced online claiming that the three have contracted the virus as Big B's grandson Agastya Nanda had attended Neetu Kapoor’s birthday party.
The 34-year-old actor was found dead in his Bandra apartment on June 14.
Then Karan is heard saying in the video clip, 'Are you laughing at dada's clothes? I guess I have to reassess my fashion choices.'
Popular singers Adnan Sami and Suresh Wadkar were also honoured with Padma Shri.
The book, written by Satyarth Nayak, was earlier unveiled by actress Deepika Padukone in Delhi.