Megastar Amitabh Bachchan on Thursday night expressed heartfelt gratitude to the makers of his upcoming sci-fi action film ‘Kalki 2898 AD’.

Recently the makers of the film unveiled a new poster of the ‘Sholay’ actor on the occasion of his 81st birthday.

Dropping the new poster on his Instagram, Amitabh wrote, “My ever gratitude for this greeting to Vyjayanthi Movies and the challenge they have thrown towards me, as also their greetings for the 11th ..”