During the "Studio Ghibli Dai Hakurankai" event earlier this month (via Anime News Network,) Studio Ghibli chairperson Koji Hoshino revealed that he hopes Miyazaki's planned Kemushi no Boro CG short will be ready for premiere by 2018. The short had been expected to debut at the Ghibli Museum earlier this year, with Ghibli producer Toshi Suzuki previously stating that the short would arrive in July. However, that date came and went. Hoshino's statement of hope that the short would arrive by the new year is also a bit optimistic as well. According to ANN, Kemushi no Boro is not listed among the museum's upcoming shorts through the next two months, meaning that Miyazaki's work is not expected to premiere before February 2018.
While it is unclear specifically why Kemushi no Boro has been delayed, while a 2016 special about the artist revealed that he is simply not satisfied with just doing the CG short, there is another project that could be taking up some of his time. Miyazaki is also working on the Kim-tachi wa Dō Ikiru ka (How Do You Live?) feature film. As was previously reported that film is expected to take 3 to 4 more years of work before it is completed. If all goes to plan, the film could premiere just in time for the Tokyo Olympics in 2020. The film, expected to be Miyazaki's final one, comes after the artist's return to Studio Ghibli earlier this year. Miyazaki had previously gone into retirement in 2013, but has come out of retirement to make one final film said to a final gift for his grandson.
Even with the upcoming How Do You Live?, Miyazaki will leave behind an impressive legacy. The artist has helmed a number of notable works over his career including My Neighbor Totoro, Princess Mononoke, Howl's Moving Castle, The Wind Rises, and Spirited Away. That film, which opened in 2001, remains highest-earning film at the Japanese box office ever and also won the 2003 Academy Award for Best Animated Film.