Kashyap announced the date by posting a picture on photo-sharing application Instagram with a caption that said, "Hamara Friday is on September"
Lead actor Abhishek Bachchan confirmed the same on his Instagram and wrote, "21st September it is! See you at a cinema Hall near you."
Apart from Bachchan, the movie starts Taapsee Pannu and 'Sanju' star Vicky Kaushal in pivotal roles.
Taapsee was last seen in David Dhawan's 'Judwaa 2' and this film will mark her first project with Kashyap.
'Manmarziyaan' will see Abhishek Bachchan return to the big screen after a gap of two years as he was last seen in the 2016 rom-com 'Housefull 3'.