I think that's true with most, though some writers in the west pretend otherwise.
Special Features for the aforementioned Mizoguchi set (unconfirmed):
New, officially-licenced, restored high-definition transfer.
Video discussion about Sansho Dayu by Japanese film expert/critic, festival programmer, and filmmaker Tony Rayns.
New and improved English subtitle translation.
Lavish 80-page book featuring archival imagery; articles by Robin Wood (film critic and author) and Mark Le Fanu (author of Mizoguchi and Japan); and a full reprint of an acclaimed translation of Ogai Mori's original 1915 story on which Sansho Dayu is based.