Not that it's "done", not by any means. There's still plenty of polishing to be done, and there's one whole section which may be unbearably cheezey and therefore require a total rework -- I still haven't decided about that. But it's all there, totally drafted. Two chapters and an epilogue, just as I thought it would be.
If the editing goes well, I may have this finished, as in complete, as in totally done, by the New Year. Shortly thereafter at the very least.