"We will be busy shooting and so will not be able to make it," Abhishek told media persons on the sidelines of the launch of eastern India's first Omega boutique here Friday.
However, he did not reveal the name of the movie which the star couple will be shooting for.
Bollywood superstar Amitabh Bachchan will inaugurate the 19th edition of KIFF. Earlier the entire Bachchan family was scheduled to be a part of it.
Back in the country after the long Dubai shoot for choreographer-director Farah Khan's "Happy New Year", Abhishek said he had a "blast" filming with co-actor Shahrukh Khan and the filmmaker.
After "Kabhi Alvida Naa Kehna" in 2006, Abhishek Bachchan is working with SRK again in "Happy New Year".
--IANS (Posted on 27-09-2013)