Saw it. It is a nice documentary but the info is kind of generic - it would be interesting for someone who has no idea about the NFR and film preservation but most people here wouldn't learn much new from it.

Not much about SW in there either. In the short time they do talk about SW in the doc, they do use some footage from GOUT rather than the 2004 version (eg. the DS explosion), though the stardestroyer fly-over clip for example is the 2004 one and they don't mention anything about the necessity of preserving the original version in the doc itself, it's only mentioned very briefly in one of the extras.