The Couchbase Console has undergone changes in its user interface with the release of Couchbase Server 5.0, which is now available for download. This new UI offers improved organization and design, including the removal of certain navigation headings and the introduction of new security features such as role-based access control. The changes were made based on feedback received from early developer builds, which allowed users to test and provide input before the final release. The updated UI also includes changes in button placement and layout, with some features now located at the top right of each screen. Additionally, the classic UI is no longer available for selection, and the user interface feedback feature has been discontinued.