According to Deadline.Com, a pair of writers have been hired by Universal Pictures to write the script for a fourth installment in the Jurassic Park series, and Steven Spielberg is set to be one of the film's producers:
While Universal Pictures has been trying all summer to generate new franchises, the studio is getting moving with the fourth installment of its biggest one, Jurassic Park. Universal is setting Rick Jaffa & Amanda Silver to write the script for the fourth film, which will be produced by Steven Spielberg and Kathleen Kennedy.The original Jurassic Park was of course freaking awesome, but the sequels were disappointments (Jurassic Park 3 in particular was a crapfest).
Deadline adds, "Universal is rereleasing the original film in 3D on July 19, 2013." That movie could definitely be a lot of fun to watch in 3D,