This is a milestone pre-release version intended for early testing ahead of the future 1.4.0 GA release. It is available from the milestone repository.

⭐ New Features

• Add @Nullable annotations #744
• Propagating values from Observation.Context to Trace's Baggage #455

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.14.0-M1 #771
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-api-semconvto 1.33.4-alpha #757
• Bump io.opentelemetry:opentelemetry-bom-alpha from 1.38.0-alpha to 1.39.0-alpha #734
• Bump io.opentelemetry:opentelemetry-bom from 1.38.0 to 1.39.0 #733
• Bump io.zipkin.aws:brave-propagation-aws from 1.2.4 to 1.2.5 #728

❤️ Contributors

Thank you to all the contributors who worked on this release:

@m15o

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.13.2 #770
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-api-semconv from 1.33.3-alpha to 1.33.4-alpha #758

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.12.8 #766

🐞 Bug Fixes

• OtelTracer does not set parent context when explicitly specified #698
• The value of parentId depends on sampling #687

🔨 Dependency Upgrades

• Bump io.micrometer:micrometer-bom from 1.13.0 to 1.13.1 #743
• Bump io.spring.javaformat:spring-javaformat-checkstyle from 0.0.41 to 0.0.42 #738
• Bump io.spring.javaformat:spring-javaformat-gradle-plugin from 0.0.41 to 0.0.42 #736
• Bump io.zipkin.aws:brave-propagation-aws from 1.2.4 to 1.2.5 #730
• Bump spring from 5.3.35 to 5.3.36 #727
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-api-semconv from 1.33.2-alpha to 1.33.3-alpha #724
• Bump com.gradle.develocity from 3.17.3 to 3.17.4 #718
• Bump io.projectreactor:reactor-bom from 2022.0.18 to 2022.0.19 #711
• Bump org.aspectj:aspectjweaver from 1.9.22 to 1.9.22.1 #708

📝 Tasks

• Add 1.3.x and remove 1.1.x from dependabot config #707

🐞 Bug Fixes

• OtelTracer does not set parent context when explicitly specified #698
• The value of parentId depends on sampling #687

🔨 Dependency Upgrades

• Bump io.micrometer:micrometer-bom from 1.12.6 to 1.12.7 #742
• Bump io.spring.javaformat:spring-javaformat-gradle-plugin from 0.0.41 to 0.0.42 #740
• Bump io.spring.javaformat:spring-javaformat-checkstyle from 0.0.41 to 0.0.42 #739
• Bump spring from 5.3.35 to 5.3.36 #725
• Bump com.gradle.develocity from 3.17.3 to 3.17.4 #716
• Bump io.projectreactor:reactor-bom from 2022.0.18 to 2022.0.19 #710
• Bump org.aspectj:aspectjweaver from 1.9.22 to 1.9.22.1 #706

⭐ New Features / Enhancements

• SimpleTracer setParent and setNoParent don't do anything #675
• re-uses w3c traceparent parser from brave #532
• deps: bumps to Brave 6.0.0 and moves off internal type #511
• Add TestSpanReporter #463

🐞 Bug Fixes

• ObservationAwareBaggageThreadLocalAccessor loses scopes in the wrong order #579
• stops setting shared flag when extracting headers #535
• Spring Boot 3.2.1 misbehave with micrometer-tracing-bridge-brave:1.2.1 #504
• OpenTelemetry and tagged baggage does not create a tag #375

Tasks

• Exclude benchmarks module from the BOM #621
• Add package-info.java with non-null by default #545
• Further deprecate OTel and Brave Http instrumentations #371
• Remove unused OTel Logging Exporter dependency #562

🔨 Dependency Upgrades

• Upgrade to OTel 1.35.0 and Zipkin dependencies #536
• Upgrade to Micrometer 1.13.0 #700
• Bump io.opentelemetry:opentelemetry-bom-alpha from 1.37.0-alpha to 1.38.0-alpha #705
• Bump io.opentelemetry:opentelemetry-bom from 1.37.0 to 1.38.0 #702
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-api-semconv from 1.33.1-alpha to 1.33.2-alpha #682
• Bump io.zipkin.aws:brave-propagation-aws from 1.2.3 to 1.2.4 #672
• Bump io.zipkin.reporter2:zipkin-reporter-bom from 3.3.0 to 3.4.0 #671
• Bump io.zipkin.brave:brave-bom from 6.0.2 to 6.0.3 #666

❤️ Contributors

Thank you to all the contributors who worked on this release:

@codefromthecrypt, @ttddyy, and @Antosch

🐞 Bug Fixes

• ObservationAwareBaggageThreadLocalAccessor loses scopes in the wrong order #579

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.12.6 #699

❤️ Contributors

Thank you to all the contributors who worked on this release:

@Antosch

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.11.12 #697

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.13.0-RC1 #654
• Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-api-semconv from 1.33.0-alpha to 1.33.1-alpha #640

🔨 Dependency Upgrades

• Upgrade to Micrometer 1.12.5 #653