We know Mersal's teaser will release in a few days, but the makers have not announced when yet. While thinking about the possible dates, we got to know that Atlee's birthday falls on the 21st of September.
Since we are just 8 days away from Atlee's birthday, we presume, the makers would be eyeing to unveil the teaser on that special day. It must be noted that the first look poster of Mersal was revealed on June 22nd for Vijay's birthday.
To release the teaser on a random, why not do it for Atlee's birthday? This is just our view and let us wait and see what Mersal team has in store for us.