Naagin 4 promo alert: Lal Tekadi Mandir's secret to be revealed soon

The makers of Naagin 4 shared a new promo of the show on social media. The video shows Rashami Desai as Shalakha, Nia Sharma as Brinda and Vijayendra Kumeria as Dev. Brinda is seen walking towards the Shiv mandir while Shalakha and Dev look shocked.
The caption of Naagin 4's promo reads: "Hoga khulasa sabse bade raaz ka, #Naagin: Bhagya Ka Zehreela Khel mein, jald Colors par! @imrashamidesai @niasharma90 @vijayendrakumeria." Take a look at the post here:
Interestingly, the third character in this poster is not shown.Is she the main female lead of Naagin 5? For the unversed, this is the last blockbuster episode of Naagin 4 where all the secrets will be revealed, as promised by Ekta Kapoor.
Naagin 5's shoot will soon be commenced as its scripting is also done and has received an approval from Ekta Kapoor. A poster of Naagin 5 was doing the rounds on social media, after which, speculations about who is playing the lead's role started doing the rounds. Names such as Hina Khan, Divyanka Tripathi, Dipika Kakar and Kratika Sengar are suggested for playing the shape-shifting serpent.