According to Deadline Die Hard 6 is currently being developed. The interesting thing and specifically what everyone is losing it on twitter (Die Hard was trending for a while last night) is that Die Hard 6 is being developed. But it is being developed as Die Hard Year One, an origin story.
Fox is looking for Len Wiseman (Live Free Or Die Hard) to work with Lorenzo di Bonaventura for the new project. The new project will be set around 1979, when John McClane was a gritty NYC cop, showing how he became the hero that he is. What’s interesting is di Bonaventura is usually Paramount-based for movies he produces. This being a Fox project, it ought to be interesting how they make this work.