I have no idea when this will get US distribution, but I can safely predict this will be one of the best animated films of the year. Short Peace is a four-part anthology film from Shochiku. This is the film last year's Katsuhiro Otomo Oscar short-listed Combustible was actually created for.
Other directors contributing segments include Shuhei Morita (Freedom, Kakurenbo), Hiroaki Ando (Five Nummbers), Koji Morimoto (Genius Party, Robot Carnival). The film opens in Japan on July 20th. Here's the newly released trailer: