Mumbai (Maharashtra) [India], April 20 (ANI): Makers of the highly anticipated ‘Kalki 2898 AD’ starring Amitabh Bachchan, Kamal Haasan, Prabhas, Deepika Padukone, and Disha Patani have something big in store for the fans as they are all set to make an announcement. The sci-fi flick is helmed by Nag Ashwin, known for his directorial works such as ‘Yevade Subramanyam’ and ‘Mahanati’. The film is touted to be a mythology-inspired sci-fi extravaganza set in the future. Amidst all the excitement for the film, a new update reveals that the makers are planning a big announcement this Sunday (April 21…