The Couchbase Developer Builds program aims to keep developers updated on the latest features and provide a platform for feedback. The program offers pre-release binaries of the next major release, with light-weight quality tests, allowing developers to try out new features in their development environment. These builds are intended for experimental purposes only and should not be used for staging or production environments. The first developer build will feature several exciting new features, including a re-designed UI, subqueries over nested collections, and improved Full-Text Search functionality. Developers can access the builds through the Couchbase website and provide feedback to help shape the final product.