Ponyo On A Cliff

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.
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.