In addition to Jackson, Variety has also stated that Gerald McRaney is on board for the film, although there is no information as to what character he will play.
Django is a freed slave who has become a bounty-hunter. He sets out to find and rescue his wife from the brutal clutches of a cruel slave owner, Calvin Candie(Leonardo DiCaprio).
"Django Unchained" is directed by Quentin Tarantino(Pulp Fiction, Kill Bill), and stars Jamie Foxx(Ray), Leonardo DiCaprio(Titanic), Kevin Costner(Dances with Wolves), and Christoph Waltz(Inglourious Basterds).
"Django Unchained" is due out in theaters December 25, 2012.