"Backlist titles" refers to older books that have been previously published but are still available for purchase. These books are not recent or new releases, but they are still available for readers to buy. Full definition
Coupled with a major marketing campaign for new trade paperback editions of key backlist titles from Penguin and audiobooks from BBC America Audio, About Face, an exceptional addition to the series, is sure to take her sales to new heights. (groveatlantic.com)
The site launched with backlist titles priced at 99 cents to $ 1.99, and when Dark Horse started doing same - day digital releases, those comics were priced at cover price or slightly below. (cbr.com)