Jurassic Park IV

Before Jurassic World was ever made and released, there were plans for a fourth installment of the original trilogy back in the 2000s.

Plot
This proposed sequel was to have Alan Grant and Ian Malcolm reunite to stop the increased breeding of dinosaurs that would cause an ecological disaster, while the other would have focused on the military using dinosaur DNA on soldiers to become an ultimate weapon.

Why It Was Cancelled

 * 1) Steven Spielberg, Frank Marshall, William Monahan and a few others were busy with other film projects.
 * 2) Director Joe Johnston was not interested in returning to make another Jurassic Park film.

Results

 * Universal announced in September 2013 that the film would be titled Jurassic World, with a release scheduled for June 12, 2015.
 * The original concepts were scrapped and was referenced by Vic Hoskins about these raptors being used by the military.

Videos
https://www.youtube.com/watch?v=tlV44502Kws