Avatar sequels

The Avatar sequels (Avatar 2, 3 and 4) are the three other sequels of the movie Avatar. There were announced by James Cameron and should be on theaters in 2017, 2018 and 2019 respectively. The sequels have been delayed a very few times. The most awaited things from the sequels are the additional information about the Na'vi culture, life and environment, which would help expanding the Na'vi language.