The release of the Prometheus Java client 1.0.0 marks a significant update to the metrics library for instrumenting Java applications, with a complete rewrite of the data model and API to accommodate new metric types and exposition formats. Notably, it introduces native histograms as a new metric type, which adapt automatically to observed data, and integrates tightly with OpenTelemetry, supporting seamless metric and tracing implementations. This release prioritizes high-performance applications by optimizing concurrent updates and scrapes, while providing extensive runtime configuration options and improved documentation. The roadmap includes porting additional modules and enhancing compatibility with OpenTelemetry's semantic conventions, reinforcing Prometheus’s integration with Grafana for streamlined monitoring solutions.