noun
Refers to a book that has been recently published; often used in contexts like bookstores, libraries, or publishing announcements.
今月の新刊書をチェックする。
I check the new books this month.
図書館に新刊書がたくさん入った。
Many new books arrived at the library.
新書 can mean 'new book' but also refers to a specific paperback format (shinsho); 新刊書 is more general and simply means a newly published book.
Compound of 新刊 (new publication) and 書 (book).