The poster, which is 193 feet and 1 inch wide and 180 feet and 2 inches tall, has entered the Guinness World Records for the largest poster in the world. It has broken the earlier record held by the poster of Michael Jackson's "This Is It", a documentary-concert film.
Akshay will unveil the special poster at the Andheri Sports Complex Oct 15 in the presence of his fans.
The actor is humbled with the feat and said "It's a matter of honour. I thank everyone who made this possible."
Created by a group of Akshay's fans called Team Akshay, it was first unveiled at the Little Gransden Airfield, Britain, Oct 3. It took the team four months to prepare the poster.
"Boss", releasing Wednesday, is an action drama directed by Anthony D'Souza.