Despite Jurassic Park IV being announced for a 2014 release last month, little is known about the long in-development project. No director or cast is set yet, and Rise Of The Planet Of The Apes scribes Rick Jaffa and Amanda Silver have written the script. Steven Spielberg, who directed the first two installments, will only produce this film. Now, according to producer Frank Marshall's most recent tweet, the fourquel has lost one of its key players. Kathleen Kennedy, who has been attached to the franchise ever since producing the 1993 original, is no longer involved with Jurassic Park IV. As head of Lucasfilm, she will be executive producing Disney's upcoming Star Wars movies, including J.J. Abrams' Episode VII in 2015. Be sure to stay tuned for more news as we have it. Jurassic Park IV is slated for a June 13th, 2014 release.