According to the official website, new Studio Ghibli's movie "Karigurashi no Arrietty" was announced to be premiered next summer.
Karigurashi no Arrietty official website
The movie is based on British writer Mary Norton
's novel "The Borrowers
Plan & Script: Miyazaki Hayao
Director: Yonebayashi Hiroaki (assistant graphic director of "Gedo Senki
Theme music: Cécile Corbel
The original plan was made by Miyazaki and Takahata nearly forty years ago. Miyazaki changed the stage of the story from Britain in 1950's to Tokyo in 2010. A family of ten centimeter tall dwarfs live through mice's attacks, insecticide, and rattraps.