Looks like where going to get promo art from the new Film Gold soon (movie comes in 5 months in japan).
staff so far we know of are
Executive Producer: Eiichiro Oda
Film Director: Hiroaki Miyamoto
http://www.animenewsnetwork.com/encyclopedia/people.php?id=44679
http://onepiecepodcast.com/2014/02/15/interview-with-one-piece-series-director-hiroaki-miyamoto/
Scenario writer: Tsutomu Kuroiwa
http://asianwiki.com/Tsutomu_Kuroiwa
I like the fact they been working on the script for over 2 years, in most anime movies the script is an after though.
Eiichiro Oda:
"So, Ive accepted the role of executive producer again. Time to make a movie!! The film director is Mr. Miyamoto, a trustworthy man who has been integral to the [One Piece] anime for six years. The script, written by the clever Mr. Kuroiwa, does not disappoint! The animation is done by this guy, and the music by that guy
wait, how am I supposed to advertise this thing without revealing anything!? We still have a lot of work to do, so development will likely continue behind the scenes until it hits theaters. Were aiming for the summer of 2016! Well present to you a cool and gorgeous One Piece like youve never seen before! Please hold on tight to your seats as you wait for it in excitement and anticipation!"
Tsutomu Kuroiwa:
"My goal was to make a profoundly entertaining movie that would knock the socks off people from all over the world. Ive spent over two years to refine my script, adding everything from excitement and humor to emotional moments. The days Ive spent discussing the movie with Oda and Miyamoto were some of my best. At times, we worked on the movie during takoyaki parties and barbecues, and it was as if Id hopped onto a ship and ventured on a great voyage. I am certain that this will become an amazing and unforgettable movie for many people. Please look forward to it!"
Hiroaki Miyamoto:
"As the movie title GOLD suggests, well be bringing to you a super dazzling and insanely fun movie, and weve assembled the best staff to do just that! The numerous meetings I had with Kuroiwa and Oda were tough, but thanks to those well be able to show you the Straw Hat crew at their coolest yet. Please wait for a while longer until next summer. Our goal is to make the ultimate entertainment movie! Please look forward to it."