Gforth 1.0’s change log describes extensible recognizers, error tracing and development-tool integration, plus multicore tasks and synchronization facilities. It also covers C and C++ interfaces and callbacks for integrating Forth programs with other systems. The project presents 1.0 as fulfillment of its initial goals, not the end of development or a guarantee that every internal interface will remain unchanged. Some entries document existing functionality, and experimental APIs may change, so users should check the stability expectations for the features they rely on.