Japanese Transformers DVD's in the U.S. (When?)

This was just a random thought I had this afternoon. In various parts of the world (Japan, the United Kingdom, Australia, China), the multiple exclusive Japanese Generation One Transformers animated series have been released on DVD. These series were released in Japan following the conclusion of the U.S. animated series in 1987. These series included The Headmasters, Super-God Masterforce, Victory, and the single episode of Zone. Each of these series have been released in various parts of the world, and with the Transformers property as popular as it is now, the question is "when will these hit the U.S.?". Hopefully with the conclusion of the Transformers reissue DVD's, Shout Factory! could somehow get their hands on these. Probably not, but one can hope.