API

Common

• Improve GraalVM native image compatibility (#7160)

Traces

• Fix TraceState key validation limits to match W3C specification (#7575)

Incubator

• Add ExtendedOpenTelemetry API (#7496)
• Add incubator implementation of composite sampling specification (#7626)

SDK

Traces

• Proactively avoid Unsafe on Java 23+ to avoid triggering JVM warning message (#7691)

Metrics

• Add setMeterConfigurator() support to MeterProvider (incubating API) (#7346)

Exporters

• OTLP: Configure metric exporter to use SDK's MeterProvider for internal metrics (#7541)
• OTLP: Suppress logging of InterruptedException from managed OkHttp threads (#7565)
• OTLP: Update dependency from okhttp-jvm back to okhttp for Gradle users, preserving okhttp-jvm for Maven users (#7681)
• Prometheus: Remove separate otel_scope_info metric and always add scope labels to data points (#7398)
• Prometheus: Update exporter dependencies to use protobuf-free formats (#7664)

Profiling

• Update profiles exporter to support proto v1.8.0-alpha changes (#7638)
• Add abstractions to assist with dictionary table assembly (#7717)
• Add abstractions to assist with sample composition (#7727)

Extensions

• Autoconfigure: Improve exception logging when running in Maven (#7336)
• Declarative configuration: Return Resource (#7639)
• Declarative configuration: Invoke auto-configure listeners (#7654)
• Declarative configuration: Add logging when incompatible types are found (#7693)

Shims

OpenTracing Shim

• Improve log levels in error scenarios (#6832)

Project tooling

• Respect testJavaVersion property when running JMH benchmarks (#7697)

🙇 Thank you

This release was possible thanks to the following contributors who shared their brilliant ideas and awesome pull requests:

@50c @anuraaga @anuragagarwal561994 @ArthurSens @bidetofevil @breedx-splk @brendenehlers @cbruegg @cyrille-leclerc @ericdallo @fandreuz @greatvovan @iNikem @jack-berg @jaydeluca @jeanbisutti @jhalliday @jkwatson @laurit @LikeTheSalad @maryliag @PeterF778 @priettt @robsunday @trask @vidyadharamurthy @zeitlinger