For philosophical reasons, it will only have one chapter.
Two chapters or sections (like Hyperobjects) provides you with something real and then a reflection on it.
Three chapters (like Ecology without Nature or The Ecological Thought) takes you on a journey from A to not-A to possibly B.
In dark ecology no journey is possible, because it is like a Möbius strip. Just as a Möbius strip has only one side, so in Dark Ecology there will be only one chapter.