According to sources from Weta the movie is currently in its pre-production stages. The movie, in its current form exists as several hundred concept images, a few of which have appeared in the Newtype magazine, and a draft screenplay which awaits editing by the chosen director. The project seems to have been in the works now for a solid few months with the Weta team working hard on perfecting visual preparation (Weta appear very dedicated, sources telling us that they have turned down two other projects over this one).
The film will not be directed by Hideaki Anno, neither will it be directed by Peter Jackson. Rumors have been flying around about who might be involved in a directing sense; who could do the series justice, remain true to the storyline and still pull off a fantastic movie? That is the question that Gainax have to answer.
Source: Animé Tourist