User blog comment:Miskos3/Fairy Tail: Dragon Cry/@comment-5708675-20170301170259/@comment-2214433-20170301215052

It's funny you say that, because the more I'm thinking about this, the more I believe that Mashima was actually talking about the movie...

A project that is already in works? > The movie was announced a while before that tweet. Check.

Lead by Mashima himself? > Mashima is the executive producer of the movie. Check.