Naagin 4: Has Ekta Kapoor begun working on fourth installment?

After the success of 'Naagin 3', now the audience are eagerly waiting to see who plays the lead role in the fourth installment of Ekta Kapoor's show and while the buzz is on with many names like Mouni Roy, Krystle D'souza, Hina Khan speculated to be the new face of 'Naagin 4', the producer announced that she would reveal it next month[Naagin 4: Ekta Kapoor Set To Reveal New 'Naagin' In September! Watch Video Inside!]. And while everyone awaits Ekta's announcement, some latest pictures of Mouni Roy who played lead role in 'Naagin 1' and 'Naagin 2', made it to reports claiming she is shooting for 'Naagin 4'. However later it was told that Mouni was indeed at the sets of an Ad-shoot. Mouni was clad in a traditional attire donning an orange kurta, cream sharara with a maang tika which is an essential ornament for the shape-shifting snakes aka naagins on TV shows.