Pretty much as Mikko said. Loads of articles and reviews in half-finished states, but pushing them for more detail, longer stories, more through-written stuff (i.e. not just interview transcripts) and more historical research means lots more time and work and follow-up interviews and so forth. It was about three and a half years from the start of issue 1 to its final printing. It's been 4 years since then. I would love for it to be quicker, but I can't imagine how that would happen. We're still on the assignment, though.
Thanks, of course, to everybody here who is still interested and excited!