Interesting in that document they refer to 1st-3rd Dan as Master, 4th-6th Dan as Instructor Master and 7th-9th Dan as Grandmaster. Also interesting is that they translate Master as Sabeom (I though Sabeom was technically the term for a KKW certified Master Instructor, although everyone uses it just for an instructor).
So everyone is on the same page, these are the new titles:
1-3 Dan: Sabum (Master)
4-6 Dan: Jido Sabum (Instructor Master)
7-9 Dan: Dae Sabum (Grandmaster).
That aside - I hate the new Kup colours (probably because I'm used to the old ones), but I like the overcoat, I think that looks really cool and I've never been a fan of wraparound uniforms.
The guep color belt system is different from what seems to be the standard in US dojang, which is white, yellow, orange, green, purple, blue, brown, red, black (or some derivative of that).
The overcoat looks like a Kuk Sool or Hwa Rang Do uniform.
I'm also interested in the Kukkiwon's thoughts as I'm more of a Kukki-Taekwondoin than a WTF Taekwondo Player (poomsae or kyorugi)...
I can say that the new uniform colors contradicts some of the stuff taught at the Kukkiwon Instructor Course, at least the one I attend, wherein they told us that colored uniforms, patches, etc. were for children to keep them motivated, but that instructors and leaders don't need such outward displays and that we should all wear plain white dobok and no stripe or indications of rank on our belts.
But it seems like WTF, in partnership with TPF, are calling the shots at the moment. The Kukkiwon, under President Kang, seems to follow WTF's lead, so I would predict that the Kukkiwon would go along with these WTF ideas and adjust the Kukkiwon Instructor Course and probably the Textbook accordingly in the near future.