v1.44.0 (2025-04-15)

Context

• Add context propagation through Environment Variables specification.
  (#4454)
• On Propagators API, stabilize GetAll on the TextMap Extract.
  (#4472)

Traces

• Define sampling threshold field in OpenTelemetry TraceState; define the behavior
  of TraceIdRatioBased sampler in terms of W3C Trace Context Level 2 randomness.
  (#4166)

Metrics

• Clarify SDK behavior for Instrument Advisory Parameter.
  (#4389)

Logs

• Add Enabled opt-in operation to the LogRecordProcessor.
  (#4439)
• Stabilize Logger.Enabled.
  (#4463)
• Stabilize EventName.
  (#4475)

Baggage

• Add context (baggage) propagation through Environment Variables specification.
  (#4454)

Resource

• Add Datamodel for Entities.
  (#4442)

SDK Configuration

• Convert declarative config env var substitution syntax to ABNF.
  (#4448)
• List declarative config supported SDK extension plugin interfaces.
  (#4452)

New Contributors

• @Nevay made their first contribution in #4456
• @adrielp made their first contribution in #4454

Full Changelog: v1.43.0...v1.44.0