Although Hideo Kojima expresses his desire to work on Zone of the Enders 3, he has now issued a statement saying that Kojima Productions does not have enough staff at the moment to do so.
"We have an environment where we could work on it using the Fox Engine. If we had staff available to work on that game, we would like to," Kojima stated.
Kojima Productions' Fox Engine will work to shorten development time for multiplatform titles allegedly. Zone of the Enders 3 would apparently use this engine, but Kojima just does not have the staff to produce the title.
For now, Kojima Productions is working hard to release HD versions of the previous Zone of the Enders titles, but there is still no word on when these will be released.