Not sure if anyone else had seen this, it's news to me but looks like it will be quite nice. From what I've found they filmed over 15,000 hours of footage in ultra high definition (4K) and they have captured all stages of making a traditional sword, by Yoshihara Yoshindo no less!
Here are a few links.
http://en.rocketnews24.com/2016/03/01/sword-enthusiasts-heres-the-katana-documentary-you-wont-want-to-miss-【video】/
https://www.makuake.com/project/4kkatanaproject/
I hope the links work.
Says they are hoping to release it in August 2016.
If anyone knows how order this I would really like to know.
Cheers, Jeff