A review copy is a pre-release version of a product, such as a book or album, that is sent to media outlets and other sources for review purposes. The goal is to generate publicity and buzz about the new release before it becomes widely available to the general public. Review copies are often used by authors, musicians, filmmakers, and other creators to get feedback from critics and journalists who can then share their opinions with their audience. This helps readers or listeners make informed decisions about whether they want to purchase or consume the new release themselves.