Hayao Miyazaki's New Film To Be About "Zero Fighter" Designer?

Possible details of Hayao Miyazaki's new film have been revealed by the tweets of two Japanese animators. According to ANN [via  Twitch], the legendary director’s next film is based on the life of Jiro Horikoshi, “the man who designed the Zero fighter plane used in the attack on Pearl Harbor during World War II. Horikoshi was an aeronautical engineer who developed a number of military aircrafts, with Zero being his most famous invention.” Completion on Miyazaki’s untitled picture is slated for late 2013.