Season one to be 10 episodes long
Big news just came out of the previously-revealed live-action One Piece project. Original manga author Eiichiro Oda revealed that he will be overseeing the production, which will start with a 10-episode first season with Steven Maeda (Lost, The X-Files) as showrunner/executive producer.
Matt Owens (Agents of S.H.I.E.L.D., Luke Cage) is serving as writer/executive producer on the co-production between Netflix and Tomorrow Studios. Netflix will handle the physical production of the show.
Here's a translation of Oda's note: