No, not that ridiculous Chick tract from the 80s -- the retro-clone of the Rules Cyclopedia version of D&D. As of this very day, it's "officially" done and available either as a free PDF download or as an inexpensive printed volume (hardcover or softcover) through Lulu.com.
I've only had a chance to look briefly at the PDF version, but it looks very good indeed. Best of all, it's completely Open Content, meaning that anyone looking to add, say, domain management or mass combat to their own retro-clone projects will find some useful material here. And of course it's even better for players whose preferred version of D&D is the 1991 Aaron Allston-edited compilation of the mid-80s Frank Mentzer-penned rules.
Check it out.