In an interview with Nintendo Life, President and CEO of Level-5, Akihiro Hino commented that he enjoyed working on the previous Professor Layton Movie and that they are looking into working on another one.
What are your thoughts on the next Professor Layton movie, is there one on the way?
Hino-san: Most of Level-5 games have been released in some kind of movie or video in Japan. Especially with Layton, I really enjoyed working with them. There are offers about maybe reaching out again for a movie, so that’s being looked into.
The rest of the interview also contain interesting tidbits about Level-5 upcoming Layton game, Layton’s Mystery Journey: Katrielle and the Millionaires’ Conspiracy, like the reason why Professor Layton is not the main character of the game. You can read the full interview at the citation below.
Layton’s Mystery Journey: Katrielle and the Millionaires’ Conspiracy arrives of the Japanese 3DS on 20 July 2017 and in the West fall 2017.
Source: Nintendo Life Interview with Akihiro Hino, link.