I follow imdb for some time and I found out that there is going to be a Jura Park IV. And yes, Steven Spielberg is going to film it once again.
They are going to shoot the movie in 2007 and seems the movie will be released in 2008.
Now I liked the first movie and the second one. But the third was so bad, it ended also so bad. Lets hope they make it like one and two
