In the latest release of JECO, version 24.11, several significant improvements have been made since the last version, previously known as ECO. The software has undergone a major restructuring, with the core algorithms and problem-solving components being moved to a new package structure under jeco.core. This includes the introduction of new algorithms such as Ant Colony Optimization and Scatter Search, which enhance the software's capability to solve complex optimization problems. Additionally, the codebase has been cleaned up by removing deprecated files and examples, leading to a more streamlined and efficient system. The documentation has been updated to reflect these changes, providing clearer guidance for users. These enhancements aim to improve the performance, usability, and maintainability of the software, making it a more robust tool for developers and researchers.