The 69-year-old, who has taken a break to recover from two abdominal surgeries last month, is preparing for the event.
"April 3rd is the day for the opening. Preparing for it already. Getting back into the grind," tweeted the actor.
The actor, known for his deep, baritone voice, had hosted four seasons of game show "Kaun Banega Crorepati" and also the third season of the reality show "Bigg Boss".