Update change log for upcoming release (#2160)

Author: trask

.github/scripts/draft-change-log-entries.sh

@@ -35,6 +35,7 @@ component_names["consistent-sampling/"]="Consistent sampling"
 component_names["disk-buffering/"]="Disk buffering"
 component_names["gcp-resources/"]="GCP resources"
 component_names["gcp-auth-extension/"]="GCP authentication extension"
+component_names["ibm-mq-metrics/"]="IBM MQ metrics"
 component_names["inferred-spans/"]="Inferred spans"
 component_names["jfr-connection/"]="JFR connection"
 component_names["jfr-events/"]="JFR events"
@@ -44,6 +45,7 @@ component_names["kafka-exporter/"]="Kafka exporter"
 component_names["maven-extension/"]="Maven extension"
 component_names["micrometer-meter-provider/"]="Micrometer MeterProvider"
 component_names["noop-api/"]="No-op API"
+component_names["opamp-client/"]="OpAMP client"
 component_names["processors/"]="Telemetry processors"
 component_names["prometheus-client-bridge/"]="Prometheus client bridge"
 component_names["runtime-attach/"]="Runtime attach"

CHANGELOG.md

@@ -2,6 +2,31 @@
 
 ## Unreleased
 
+### Consistent sampling
+
+- Add updateable threshold sampler for dynamic sampling configuration
+  ([#2137](https://github.com/open-telemetry/opentelemetry-java-contrib/pull/2137))
+
+### Disk buffering
+
+- Introduce API changes for improved disk buffering functionality
+  ([#2084](https://github.com/open-telemetry/opentelemetry-java-contrib/pull/2084))
+- Implement more efficient serializer with direct disk write capabilities
+  ([#2138](https://github.com/open-telemetry/opentelemetry-java-contrib/pull/2138))
+
+### IBM MQ metrics - New 🌟
+
+IBM MQ metrics collection utility.
+
+### Inferred spans
+
+- Update async profiler to version 4.1 for improved performance
+  ([#2096](https://github.com/open-telemetry/opentelemetry-java-contrib/pull/2096))
+
+### OpAMP client - New 🌟
+
+OpenTelemetry Agent Management Protocol (OpAMP) client implementation.
+
 ## Version 1.48.0 (2025-07-23)
 
 ### AWS resources