The 41-year-old actor, who has been dating the actress since 2007, revealed the news at the Blenders Pride Fashion Tour saying, "The wedding date would be announced after his home production 'Agent Vinod' is completed."
The film is scheduled for release on Feb. 10, 2012, and Saif Ali Khan said the announcement will be made after that, probably on Valentine's Day, Feb. 14.
"They have been together for quite some time now and their relationship has grown. I can hardly wait for the wedding next year. There will be a number of functions and I am very excited about what to wear," said Saif's younger sister Soha Ali Khan, who also walked the ramp at the Blenders Pride Fashion Show.
Saif is currently busy with the post-production of "Agent Vinod" and says he wants to focus on his production for now.
"Something big is definitely happening next year. This year we are going to focus on our film 'Agent Vinod' and next year, we are talking about marriage," he added.
Earlier reports said the marriage was postponed due to his father and veteran cricketer Mansoor Ali Khan Pataudi's illness. Currently, Pataudi is in the Intensive Care Unit of Sir Ganga Ram Hospital in Delhi.