"After the success of my film, The Last Airbender, I decided that western audiences really needed to know more about obscure but great anime, so I decided to adapt Attack on Titan.
Of course, we're going to have to change the name to 'Attack on Giants' to avoid confusion with the Clash of the Titans franchise, but I really think that we can tell a great story of Orwin Hunter, the cursed boy who turns into a giant to fight for the love of his friend, Michelle. We're shooting for a mid-summer release of this year; I feel like this property is just too hot to sit on the back-burner of obscurity anymore."

Source: http://goo.gl/zQAqCg