Three new 'making of' (mekingu) shorts have been added to the official website for Jun'ya Satô's Yamato (Otoko-tachi no Yamato). The first one is simply comprised of production footage, the second is comprised of an interview with actor Takashi Sorimachi that's primarily set to production footage, and the third is comprised of an interview with actor Shidô Nakamura that's largely set to production footage.
Principal photography for Yamato began on March 26. The budget for the film reportedly is ¥1.5 billion (approx. $14 million U.S.) - the same as the official production cost of Masaaki Tezuka's upcoming Civil War Self-Defense Forces 1549 (Sengoku jieitai 1549).
For more info on Yamato, see ScreenAnarchy's previous articles on it here and there.