Well, this topic could now be relevant but is still dead. There are trailers and everything. Lego sets, too.
Also, about this whole "dinosaurs being unrealistic", the makers of the movie literally hired paleontologists to make sure they were realistic. I'm guessing that does not mean to their particular species, but just to dinosaurs as a whole.
As for the Dilophosaurus, here is a page to the Jurassic Park Wiki (do they have one of those for everything?):
Edit: WAIT A SECOND! After further researching, I've discovered that my favorite dinosaur (I was a dino nerd in kindergarten), the Allosaurus, is in Fallen Kingdom. My hype is real, guys.