Yes, there are plans to do a SHAFT sequel with Samuel L. Jackson starring and John Singleton returning to direct. While talking to Chicago Sun-Times columnist Cindy Pearlman, Singleton revealed, "We just keep talking and talking bout it."
So, what's the problem? The helmer explains, saying, "We're trying to make Part 2 much more interesting than the first one. And Samuel L. and I won't do a second one unless we can make it real interesting."