The upcoming second issue of Shonen Jump GIGA (formerly Shonen Jump NEXT!!) magazine will have cross talk between authors Masashi Kishimoto and Yoshihiro Togashi, creators of Naruto and Hunter x Hunter. In this interview, Masashi Kishimoto confirmed that he is already planning his next project and that he has already done research for it. He also said in the interview that he thinks the project may be announced this year, but there is no definite date.
Interviewer: Will there be an announcement in the coming year? (speaking of Kishimoto’s next project)
Kishimoto: Ah, I think so. Somewhere around there.
Last year Kishimoto sensei confirmed that he is working on a science-fiction story. We’ll just have to wait and see what sort of sci-fi manga it will be.