Hideo Kojima said during an interview over on the EU PS Blog that as far as a new Zone of the Enders game is concerned, it's not a question of "if" one will be released, just "when".
"A lot of [people] love Zone of the Enders, and we love the title as well, especially at Kojima Productions and we always want to create one for the next gens as well," he said.
"Of course, Kojuma Productions has a long list of things we want to bring out, and of course Zone of the Enders is one on the top of the list.
"However, we have to manage staffing and work around projects so it's not going to be out too soon, but we are really considering it."
You can watch the full thing through the link there.