April sci‑fi releases flagged
New Scientist’s April roundups and social posts call out new entries in established franchises—stories set in George R.R. Martin’s Wild Cards universe and a new Expanse novel by James S.A. Corey are among this month's science‑fiction releases. ( ) Reader posts also boosted indie titles like 'Hybrids Invade' by TK Aguila, flagging strong early praise. ( )
April’s science-fiction lists are tilting toward familiar universes: New Scientist’s roundup spotlights a new Wild Cards collection and James S. A. Corey’s latest novel. (newscientist.com) New Scientist published its April list on April 1, 2026, and named *Sleeper Straddle*, edited by George R. R. Martin, among the month’s releases. The magazine described the book as a collection set in the Wild Cards universe, where an alien virus kills some people, mutates others and gives a few superpowers. (newscientist.com) That Wild Cards release is scheduled for April 23, 2026 in a HarperVoyager edition. The franchise itself dates to 1987 and is a shared-world series created and edited by Martin, with dozens of contributors writing in the same alternate history. (harperreach.com (us.macmillan.com)) James S. A. Corey’s April book is *The Faith of Beasts*, published on April 14, 2026. Corey’s official site says it is the second volume in *The Captive’s War*, the trilogy that followed the end of *The Expanse*. (jamessacorey.com (jamessacorey.com)) That matters for readers who came in expecting a direct return to *The Expanse*. The new novel is not another Rocinante story; it continues a separate space-opera arc that began with *The Mercy of Gods* on August 6, 2024. (jamessacorey.com (hachettebookgroup.com)) The April roundup also shows how publishers keep long-running brands active in different formats. Macmillan lists *Aces Full*, a 432-page Wild Cards collection that gathered stories first published on Reactor and came out in hardcover on November 11, 2025, while *Sleeper Straddle* extends the line again this month. (us.macmillan.com (harperreach.com)) Outside the franchise names, reader posts have also pushed smaller releases into the same conversation, including T. K. Aguila’s *Hybrids Invade*. Aguila’s site describes it as a post-apocalyptic novel in which deforestation in the Amazon unleashes a virus that infects reptiles and turns humans into undead half-reptilian creatures. (tkaguila.com) Early retail and catalog pages frame *Hybrids Invade* as an indie release available in ebook, paperback and hardcover, with Amazon and Goodreads listings already live. Those pages identify Aguila as a San Francisco-based writer with a background in physics, biochemistry and computer science. (amazon.com (goodreads.com)) The through line in April’s lists is not one subgenre but one publishing tactic: pair recognizable names with new entry points. A Wild Cards anthology, a post-Expanse trilogy installment and a self-published apocalypse novel are all being surfaced in the same monthly discovery cycle. (newscientist.com (us.macmillan.com)
