So the JWE2 species profile for Tyrannosaurus was released and it contains a cool reference to the second film.
Dear Frontier,
I really hope this game comes with a Site B mode or at least a Site B expansion/DLC
Xenotaris
They've stated that the new "Chaos Theory" mode will focus on certain events from the movies, so Site B/ Isla Sorna will most likely be in the game.