Context

• Deprecate Jaeger propagator and make propagator implementation optional.
  (#4827)
• Deprecate OT Trace propagator and make propagator implementation optional.
  (#4851)

Metrics

• Add normative language to the Metrics API/SDK spec concurrency requirements.
  (#4868)

Logs

• Add optional Exception parameter to Emit LogRecord.
  (#4824)
• Add normative language to the Logging API/SDK spec concurrency requirements.
  (#4885)

Resource

• Refine the handling of OTEL_RESOURCE_ATTRIBUTES.
  (#4856)

Common

• Add string representation guidance for complex attribute value types (byte arrays,
  empty values, arrays, and maps) for non-OTLP protocols.
  (#4848)

Compatibility

• Stabilize Prometheus Counter to OTLP Sum transformation.
  (#4862)
• Stabilize Prometheus Gauge to OTLP Gauge transformation.
  (#4871)

SDK Configuration

• Swap Tracer/Meter/LoggerConfig disabled for enabled to avoid double negatives
  (#4823)
• Declarative configuration: rename ComponentProvider to
  PluginComponentProvider, CreatePlugin to CreateComponent in effort to
  use consistent vocabulary
  (#4806)
• Declarative configuration: Update instrumentation config behavior to return
  empty object when not set
  (#4817)