Miyazaki’s next Studio Ghibli film is going to have a lot of baggage. From the AICN summary,
Miyaki will be addressing his relationship with his son, Tales of Earthsea director Goro Miyazaki through the movie’s boy Sosuke. Parent/child relationship will influence the movie. In particular, Hayao Miyazaki found his work informed by what as saw as Goro actor of “resistance” directing Earthsea.
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Miyazaki notes the effects of his age several times and demonstrates a strained relationship with his son.
ok, then. As if that wasn’t enough, there’s also controversy over Miyazaki’s rivalry with Yasuhiro Nakura of Girl Who Leapt Through Time fame:
Some are accusing Miyazaki of plagiarizing the work of Yasuhiro Nakura, an animator who worked with Miyazaki on Laputa: Castle in the Sky as well Ghost in the Shell 2: Innocence, Metropolis and The Girl Who Leapt Through Time. Message board 2Chan notes similarities to the book “The world of Nakura Yasuhiro.”
There’s a lot more information, about the film as well as the meta, at GhibliWorld.