There is a thread with some mini-reviews when it was first released: http://www.basenotes.net/threads/231222-NEW-Amouage-Epic!!!-Pics-and-Mini-review-included
Check it out. You'll find some discussion of the notes, initial impressions, etc. As for the perfumer(s), I'm not sure. But Christopher Chong is the creative director for Amouage and would have been responsible for the brief.
Agreed that it's a knock-out. I have my eye on a full bottle.