The competition in the 'Bigg Boss 15' is getting more serious day-by day. Former 'Bigg Boss 13' contestants Rashami Desai and Devoleena Bhattacharjee are likely to enter the house as wild card entries. In other news, actress Shamita Shetty will be seen re-entering the show.  The 'Weekend Ka Vaar' episode will also see star cast of 'Satyameva Jayate 2' and 'Antim: The Final Truth' in the Bigg Boss 15 house.