So, not quite done yet --
- send it out for critique by unfamiliar eyes -- DONE!
- get an ISBN -- DONE!
- get a cover -- DONE!
- copyedit -- Pass 2 and final; at greater than 50% for the copy-editor
- generate EPUB -- automated long since; even counting the manual zip step, requires < 30s
- make available -- unfulfilled dependencies.
Various (mostly micro-) organisms have been trying to kill the copy-editor. It hasn't worked, but it has slowed things down substantially. So no book in April, because there is no more April.
I continue to view this as preferable to "no more copy-editor".
Book in May? I continue hopeful.
 There's presumably a kind of author who would feel that their robust prose was the real reason the copy-editor succumbed and mwah-ha-ha a bit. I am not at all that kind of author.