Fanboys hoping to don the blue paint and do their best Na'vi impression might as well go into deep-space hibernation for a few more years.

That because, according to Avatar producer Jon Landau, the ambitious plans James Cameron has for shooting his two hugely anticipated sequels means moviegoers aren't likely to see Avatar 2 and Avatar 3 until 2016 and 2017.

That's two years longer than the December 2014 target date 20th Century Fox announced when the projects were officially unveiled.