The creators of the Crank movies gave an interview to and said that there will definitely have a third edition to the series and it will be in 3D.  The story is already written, but they won’t film for another year or so depending on when Jason has a break in his busy schedule.  The guys also mentioned wanting to do more editions to Crank even after 3D and if they do, they will still have Jason as its star.  I can’t imagine how much more Crank I can take after a 3D version of it.  They go so over-the-top with these storylines, but at least these guys are loyal to Jason.