Kamal Haasan will be seen sporting a salt and pepper look in the new 4th season. He surprised fans with this look in the recent teaser of the show.While speculations were rife that the 4th season will be confined to only 60 days, we now hear that the makers have decided to go with the usual tenure - 100 days with 15 or 16 entering the show.While 3rd season finalist Sandy Master has been roped in to choreograph the teasers and opening episode, Kamal’s favourite, M Ghibran, has composed the music for the teaser video.Costume designer and fashion stylist Amritha Ram is also likely to return for the new season to work with Kamal and the participants.Kamal Haasan and the BB team are likely to be basing the new season on spreading awareness about Covid-19 and the new normal. This is quite evident from the already-released teasers this season.A few changes are expected in the game format and tasks given to the contestants this season. The emphasis will be again on safety and precautions.The makers seems to have ensured that the contestants are in a bio-bubble for two weeks prior to being sent into the house. Ration and the costumes will be sanitized before the supply.The swimming pool is also likely to be off limits this season.Also, in a major change, the weekend episodes will most probably not have the LIVE audiences, as a precautionary measure to curb COVID-19 spread on the sets.Also, as another precautionary measure, the usual press visit to the bigg boss sets and the subsequent one-day stay has been cancelled this season.A few popular names are doing the rounds on social media as the most probable contestants this season.The speculated list includes Shivani Narayanan, Ramya Pandian, Rekha Harris, Archana Chandhoke, Gabriella Charlton, Sanam Shetty, Rio Raj, Aajeedh Khalique, Anu Mohan, Aari Arjuna, and Arandangi NishaAlso, names like singer Velmurugan, Balaji Murugadoss, model Someshekar, actor Vignesh are also being said to have been contacted.Most of the contestants are reportedly under quarantine already, and ready to enter the house on October 4.