Jurassic World is being touted as a sequel to the other three films, but what else do we know about the tight lipped Jurassic Park 4?

The fourth installment was confirmed to be a sequel to the previous films and not a reboot on Nov. 23. Since then, the film's cast has been slowly leaked as well as its plot outline. New dinosaurs have also been teased.

Jurassic World director Colin Trevorrow tweeted Nov. 23, "Reboot is a strong word. This is a new sci-fi terror adventure set 22 years after the horrific events of Jurassic Park."

Judging by the information fans have, it looks like the 2015 film will be an advanced version of the first one.

1. Same island, bigger park:

Jurassic Park took place on a fictional island named Isla Nublar, and the new installment is also set to take place there. The only difference is that they changed the dinosaur theme park from a "Park" to a "World."

2. Confirmed and rumored cast:

Jurassic World has so far released a main cast of Bryce Dallas Howard, Jake Johnson, child stars Nick Robinson and Ty Simpkins. Chris Pratt is rumored to be in the lineup. Howard's role is described as being a, "smart, corporate scientist. The other character that has been described is a "rugged, ex-military type." This is presumed to be the role Pratt is close to obtaining. With Robinson and Simpkins rumored to be big brother and little brother, comparisons to Lex Murphy and Tim Murphy could be made. Finally, there is still hope that Jeff Goldum will make an appearance.

3. Dinosaurs

The one thing we have heard is Jurassic Park advisor and paleontologist Jack Horner talking about a new dinosaur.

"I can't actually tell you who that will be," says Horner, who will consult on the new film. "But you'll want to keep the lights on after you see this movie."

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