Washington, who won a Tony Award for starring in the 2010 Broadway revival of Wilson's drama about race relations in the U.S., revealed his plans to direct a film version of the Pulitzer Prize-winning play last year (15), and now, he's recruited Kushner to adapt Wilson's script for the project.

Kushner also has a Pulitzer and a Tony for his acclaimed play Angels In America: A Gay Fantasia On National Themes. He adapted his script for the 2003 TV mini-series of the same name, earning him an Emmy Award. He previously wrote the Oscar-nominated screenplays for Steven Spielberg's movies Lincoln and Munich.

Washington is also expected to reprise his role in the Fences film, alongside Viola Davis, who won a Tony Award for the production, in which she played his wife.

Hollywood executives first considered a movie version of Wilson's play back in 1990, but the playwright, who died in 2005, would only give his consent if a black director was hired for the project.