Ladies and Gentlemen, we have a official date.
It seems that its back to Nublar and from the info that is out right now, this movie takes place aprox 20 years after the events of the other movies, where a majority of the island is under control and the northern part is completely untamed, left for the animals to run free in the abandoned facilities of Ingen.
The plot is basically centered around a hybrid creation from the geneticists in the island, that seek to bring something thrilling to the audience since all the other dinos are "old news". This dinosaur has been nicknamed Diabolus Rex or D-Rex for short, is the combination of Velociraptor, T-Rex, Cuttlefish and Rattlesnake
EDIT2: TRAILER TIME