Basically, Shyamalan is taking his concept for the Unbreakable sequel and making it one of his "Night Chronicles" movies, which is a set of movies in which he thinks of the concept but someone else writes and directs. Basically, I think even Shyamalan realizes that his fifteen minutes were up long ago (and that he's a hack) and his string of "twist" movies were getting more lame as time passed.
I enjoyed Unbreakable and its take on comic book superheroes even if it was intentionally a very slow-moving film. Perhaps Bruce Willis and Samuel L. Jackson could take the same roles even if it's a different movie with a different title and different characters? Hey, I can dream, can't I?