Sourced from go.opentelemetry.io/otel/sdk's changelog.

[1.42.0/0.64.0/0.18.0/0.0.16] 2026-03-06

Added

• Add go.opentelemetry.io/otel/semconv/v1.40.0 package. The package contains semantic conventions from the v1.40.0 version of the OpenTelemetry Semantic Conventions. See the migration documentation for information on how to upgrade from go.opentelemetry.io/otel/semconv/v1.39.0. (#7985)
• Add Err and SetErr on Record in go.opentelemetry.io/otel/log to attach an error and set record exception attributes in go.opentelemetry.io/otel/log/sdk. (#7924)

Changed

• TracerProvider.ForceFlush in go.opentelemetry.io/otel/sdk/trace joins errors together and continues iteration through SpanProcessors as opposed to returning the first encountered error without attempting exports on subsequent SpanProcessors. (#7856)

Fixed

• Fix missing request.GetBody in go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp to correctly handle HTTP2 GOAWAY frame. (#7931)
• Fix semconv v1.39.0 generated metric helpers skipping required attributes when extra attributes were empty. (#7964)
• Preserve W3C TraceFlags bitmask (including the random Trace ID flag) during trace context extraction and injection in go.opentelemetry.io/otel/propagation. (#7834)

Removed

• Drop support for [Go 1.24]. (#7984)

• a3941ff Release v1.42.0/v0.64.0/v0.18.0/v0.0.16 (#8006)
• 6059c47 chore(deps): update golang.org/x/telemetry digest to e526e8a (#8010)
• 44c7edf chore(deps): update module github.com/mgechev/revive to v1.15.0 (#8009)
• de5fb3a fix(deps): update module google.golang.org/grpc to v1.79.2 (#8007)
• 0b82ded chore(deps): update codspeedhq/action action to v4.11.1 (#8001)
• aa3660f chore(deps): update github/codeql-action action to v4.32.6 (#8004)
• 9be8c92 chore(deps): update dependency codespell to v2.4.2 (#8003)
• c9d2015 log: add error field to Record and make SDK to emit exception attributes (#7924)
• fdd1320 TracerProvider ForceFlush() Error Fix (#7856)
• 78f9904 chore(deps): update golang.org/x/telemetry digest to 18da590 (#8000)
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