GitHub has introduced showcases as a method to discover trending and interesting repositories, categorized for easier exploration by topic. These showcases are curated lists of repositories, similar to a staff-recommended shelf at a bookstore, providing a new way to explore related projects. Each showcase page includes a full list of highlighted repositories, reasons for their selection, and features for searching, viewing related showcases, and discovering new ones. Users can browse through the showcase listings or subscribe to an Atom feed to remain updated on the latest additions, enhancing the discovery experience on GitHub.