Jurassic Park IV Articles:

The following is a list of articles that include information about Jurassic Park 4 and general Jurassic Park IV developments. Known Jurassic Park IV information is growing all the time so check back often to make sure you're up to date!

http://www.imdb.com/title/tt0369610/faq
IMDB Frequently Asked Questions on Jurassic Park IV, including info on casting, timelines etc.

http://movies.ign.com/articles/778/778968p1.html
IGN article on the involvement of Laura Dern (Dr. Ellie Sattler) in Jurassic Park 4.

http://www.comingsoon.net/news/movienews.php?id=40003
ComingSoon.net interview with Frank Marshall in which he confirms Jurassic Park IV for 2009 release.

http://www.mtv.com/movies/news/articles/1556604/20070406/story.jhtml
Article from MTV stating that Joe Johnston will definitely not be directing Jurassic Park IV.