The announcement does not eliminate the possibility that he will be making shorter films in the future.
Miyazaki started his career in the 1970s, working on such television anime shows as "Lupin III" and "Future Boy Conan." His first feature length film was "Lupin III: The Castle of Cagliostro." His next feature, "Nausicaa of the Valley of the Wind," was released shortly before the formation of Studio Ghibli.
Since then, Miyazaki and Studio Ghibli have become known for films such as "Castle in the Sky," "Kiki's Delivery Service," "Princess Mononoke," "Spirited Away," "My Neighbor Totoro," "Howl's Moving Castle," and "Ponyo." His recent film, "The Wind Rises," has been playing in Japan since July 20 and is scheduled to be in competition at the Venice Film Festival later this month.
"Spirited Away" remains Miyazaki's biggest hit, and won the Oscar in 2003 for Best Animated Film.
Miyazaki has said in an interview that he was open to doing a sequel to "Nausicaa," but was planning on giving the project to director Hideki Anno ("Neon Genesis Evangelion"), who has collaborated with Miyazaki and Ghibli on a couple of projects and voices a major character in "The Wind Rises."
This is not the first time that Miyazaki has announced his retirement. Shortly after "Princess Mononoke," he announced that he would be retiring from making films, but would go on to make his next picture, "Spirited Away."