DC Comics solicited Cyborg Vol. 4, the fourth volume of the Rebirth series, in their Fall 2018 catalog listings, though the book never saw print. It was said to collect issues #21–26 by “new” series writer Marv Wolfman, following John Semper after a couple issues by Kevin Grevioux. DC published issues #21–23, but then, in what’s a relatively uncommon move, they canceled the book mid-storyline and never released issues #24–26.
That kind of thing hasn’t happened much lately that I can recall. There were a few books that never saw collections of their final issues around Flashpoint in the run up to the New 52 era; also some books at the end of the New 52/DC You era were cut short, but then we saw their unpublished issues released in digital or in the trade only.1 That Cyborg series' demise came shortly after Dark Nights: Metal — so not on the cusp of a big “sweep everything old under the rug” continuity reboot, though I do think it was a time DC was giving struggling series less margin; among the short-lived “New Age of Heroes” books, not too long after, Damage also had a few final issues never collected.
