According to Amazon.com, which is wrong more often than not, none of the releases of Mad Max 4 will feature the black & white or silent versions of the film that George Miller promised would be included.
Hopefully this is an oversight, otherwise it looks like there’ll be a project or two for a restless fan =| (not to imply that that restless fan is me, I’m just trying to start a discussion)
I think I may have seen somewhere that someone is already working on a silent version?