What are editorial reviews? Do they need to be delivered before my book's launch?

Editorial reviews are different from reader reviews. Editorial reviews come from reviewers at literary or publishing journals, other authors, social influencers, or other notable individuals. It’s always best to have editorial reviews completed before your book's launch, especially if you want to have a praise page in the front of your book or include the editorial reviews on your book's back cover or dust jacket. However, reviews that come in after a book's launch can still be used on a book's product page or in marketing campaigns, so they are still useful.