"Avatar 2", the most-awaited CGI movie, will hit theatres only in 2017. But, there's already a lot of buzz around the film's technology and delayed release date, with the latest speculation suggesting the film will revolve around a prison theme.

Director James Cameron has explained the reasons behind the delay in his earlier interviews. He clearly mentioned that he would like to experiment with some advanced technology and he is not well-equipped with the tools required to implement his innovative ideas.

It has been widely reported that Cameron and his team is focusing on creating graphics for the ocean ecosystem of Pandora to film the "oceanographic exploration". To execute this, the director will require the technology that will allow cameras to capture motion sequences underwater. All this contributed to delaying the release of "Avatar 2".

The film will revolve around a prison theme, reported Christian Post. The website said the theme was revealed in a poster created by Gökşan Özman. Apparently, Özman -- who has created posters for films like "Gravity," "Noah," and "The Wolf of Wall Street" -- chose to focus on the prison theme for "Avatar 2" because it is expected to dominate the entire plot. 

While technical reasons have delayed "Avatar 2", James Cameron has now said that the third and fourth film will not be affected due to this postponement. Franchise Herald (via Crossmap) has reported that Cameron and his crew are working on "Avatar 3" and "Avatar 4" simultaneously.

"We expect to be able to accelerate the process quite a bit, because we've improved a lot of the software and the computer graphics tools, and we've been working very closely with Weta Digital down here in New Zealand developing a whole new suite of tools to speed up the process," the director said.

"We're writing three simultaneously. And we've done that so that everything tracks throughout the three films. We're not just going to do one and then make up another one and another one after that and parallel with that, we're doing all the design. So we've designed all the creatures and the environments," Cameron added.

20th Century Fox's "Avatar 2" will release in December 2017. "Avatar 3" and "Avatar 4" are expected to be released in 2018 and 2019, respectively.

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