noun
new work; new book; new publication
Refers to a newly published book or written work, often used in contrast with 旧著 (previous work). Common in literary and academic contexts.
See also: 旧著
彼の新著が来月発売される。
His new book will be released next month.
新著のテーマは環境問題だ。
The theme of the new publication is environmental issues.