Those of you who hung up your Ranger uniforms and packed up the cloning equipment should probably take a step back into the lab and listen for a bit.
Jurassic Park IV is not dead.
Marshall and Kennedy did indeed say they did not plan to make another Jurassic Park IV, but Universal is still very much interested in continuing the franchise, and while neither producer has renewed their deals with Universal they still continue to work on Jurassic Park IV (as well as the fourth Bourne film).
This could still see some problems; making JPIV with producers that are less than enthusiastic about the project may yield undesirable results, but we can't be sure. Still, Jurassic Park IV is still an ongoing project, and has not actually been canceled. So keep constructing those paddocks, and get the bugs out of the Explorers; Jurassic Park is still alive.
What may be extremely sad news for JP fans was revealed yesterday. Producers Frank Marshall and Kathleen Kennedy (whom worked as the producer of the entire JP film series, as JP fans should know) announced on Sunday that there are no plans to continue work on Jurassic Park IV. When asked about the movie's status, Kennedy responded, "No... I don't know. You know, when Crichton passed away, I sorta felt maybe that's it. Maybe that's a sign that we don't mess with it."
So, it seems that JPIV will no longer be made, halting the series (as it now stands) at the current three movies. It is possible that, somewhere down the road, JPIV will be picked up again, as Kennedy's words don't seem to make the movie's cancellation concrete, but as of now JPIV appears to have been canceled.
Though this is a sad truth, we at JPLegacy hope that all you Jurassic Park fans will stay with the series. Hollywood, it seems, will not be bringing anything new to the series. However you, the fans, still exist, and you can breathe new life into Jurassic Park. And of course, JPL will be there, and we have some new content ideas that we will be working on.