Zee Studios posted the film's poster along with its new release date on its official Instagram page.
"With a personality queen size, Jayalalithaa's story has always belonged to the big screens! Embark on her inspiring journey from being a cine star to becoming one of the most influential CMs in theatres near you on 10th September," the caption read.
Directed by Vijay and written by KV Vijayendra Prasad, "Thalaivii" also stars Arvind Swami, Madhoo, Prakash Raj, Jisshu Sengupta, Bhagyashree, and Poorna.
Apart from "Thalaivii", Ranaut, 34, will also be seen in the action film "Dhaakad" and "Tejas".