Much of Hong Kong cinema I end up getting DVDs from Hong Kong itself (such as HiViZone.com). Region encoding is no problem these days to defeat and many HK DVDs aren't encoded anyways. Are there problems with the actual Hong Kong DVDs regarding aspect ratios etc?
Disney's been releasing some of their more "controversial" cartoons in their Walt Disney Treasures series, with an annoying Leonard Maltin disclaimer, but they are there nonetheless. That's how "Education for Death" and other previously unreleased cartoons got out. I imagine Song of the South will eventually follow with a similar annoying disclaimer, the demand is too big for Disney to ignore.