Amazon has put up a listing for NieR:Automata: Short Story Long, revealing the cover, release date as well as several other details. If you are interested, you can preorder the book (which is being published by VIZ Media with an ISBN-10 of 1974701840 as well as an ISBN-13 of 978-1974701841) with this link from the online retailer; furthermore, you can check out its front cover with the image located just below this paragraph.
According to the product page, NieR:Automata: Short Story Long will be released on April 9, 2019, in the North American region. You can take a look at Amazon’s product description for the book below:
Experience the world and characters of the hit video game franchise!
When alien forces invade with an army of Machines, the remnants of humanity must depend on Androids of their own design—the placid 2B and the excitable 9S—to survive.
From Pod 153,
to fans of NieR Automata [ref &NieR: Automata: a Short Story Long]
Question: What is a fiction collection?
Affirmative: It is hypothesized that this book is “interesting.”
Hypothesis: “Interest” is an internal incentive that allows humans to practice tolerance.
Recommendation: To purchase this volume of short fiction exploring the world of NieR.
From Pod 153 to 042: Affirmative. We have concluded executing additional advertisement duties.