In December last year, MovieCrow had reported about Kamal Haasan's Raaj Kamal Films International (RKFI) producing a movie with actor Sivakarthikeyan and director Rajkumar Periyasamy.

This project was officially announced at the Bigg Boss Tamil 5 finale during Pongal this month. Latest we hear actress Sai Pallavi has come on-board this movie, which tentatively goes by SK 21. 

Along with RKFI, Sony Pictures Films India and God Bless Entertainment is co-producing SK 21, which is also written by Rajkumar Periyasamy. An official announcement on the film's cast and crew is currently awaited.