diff --git a/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md b/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md
index 0d4fe06b715..053e851879f 100644
--- a/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md
+++ b/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md
@@ -7,6 +7,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 ## 1.12.0
 
 Released 2025-Apr-29
diff --git a/src/OpenTelemetry.Api/CHANGELOG.md b/src/OpenTelemetry.Api/CHANGELOG.md
index 7b945a53b73..828ba7f0c3a 100644
--- a/src/OpenTelemetry.Api/CHANGELOG.md
+++ b/src/OpenTelemetry.Api/CHANGELOG.md
@@ -6,6 +6,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 * Added `AddLink(SpanContext, SpanAttributes?)` to `TelemetrySpan` to support
   linking spans and associating optional attributes for advanced trace relationships.
   ([#6305](https://github.com/open-telemetry/opentelemetry-dotnet/pull/6305))
diff --git a/src/OpenTelemetry.Exporter.Console/CHANGELOG.md b/src/OpenTelemetry.Exporter.Console/CHANGELOG.md
index 830320af8cd..cb69c7c4eb4 100644
--- a/src/OpenTelemetry.Exporter.Console/CHANGELOG.md
+++ b/src/OpenTelemetry.Exporter.Console/CHANGELOG.md
@@ -6,6 +6,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 ## 1.12.0
 
 Released 2025-Apr-29
diff --git a/src/OpenTelemetry.Exporter.InMemory/CHANGELOG.md b/src/OpenTelemetry.Exporter.InMemory/CHANGELOG.md
index 94ab2a90523..d273852a8d7 100644
--- a/src/OpenTelemetry.Exporter.InMemory/CHANGELOG.md
+++ b/src/OpenTelemetry.Exporter.InMemory/CHANGELOG.md
@@ -6,6 +6,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 ## 1.12.0
 
 Released 2025-Apr-29
diff --git a/src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md b/src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md
index 2f42b44940f..7c3ff981278 100644
--- a/src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md
+++ b/src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md
@@ -7,6 +7,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 * Fixed an issue in .NET Framework where OTLP export of traces, logs, and
   metrics using `OtlpExportProtocol.Grpc` did not correctly set the initial
   write position, resulting in gRPC protocol errors.
diff --git a/src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md b/src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md
index d6e35a477a9..8735a0eadda 100644
--- a/src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md
+++ b/src/OpenTelemetry.Exporter.Zipkin/CHANGELOG.md
@@ -6,6 +6,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 * Removed the peer service resolver, which was based on earlier experimental
   semantic conventions that are not part of the stable specification. This
   change ensures that the exporter no longer modifies or assumes the value of
diff --git a/src/OpenTelemetry.Extensions.Hosting/CHANGELOG.md b/src/OpenTelemetry.Extensions.Hosting/CHANGELOG.md
index 7b8e3b670b8..0a8fee4bfe8 100644
--- a/src/OpenTelemetry.Extensions.Hosting/CHANGELOG.md
+++ b/src/OpenTelemetry.Extensions.Hosting/CHANGELOG.md
@@ -6,6 +6,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 ## 1.12.0
 
 Released 2025-Apr-29
diff --git a/src/OpenTelemetry.Extensions.Propagators/CHANGELOG.md b/src/OpenTelemetry.Extensions.Propagators/CHANGELOG.md
index 2c5ded719b3..d159600596a 100644
--- a/src/OpenTelemetry.Extensions.Propagators/CHANGELOG.md
+++ b/src/OpenTelemetry.Extensions.Propagators/CHANGELOG.md
@@ -6,6 +6,10 @@ covering all components see: [Release Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 ## 1.12.0
 
 Released 2025-Apr-29
diff --git a/src/OpenTelemetry/CHANGELOG.md b/src/OpenTelemetry/CHANGELOG.md
index 9f6bf0633d6..78c59ede599 100644
--- a/src/OpenTelemetry/CHANGELOG.md
+++ b/src/OpenTelemetry/CHANGELOG.md
@@ -6,6 +6,10 @@ Notes](../../RELEASENOTES.md).
 
 ## Unreleased
 
+## 1.12.1-alpha.3
+
+Released 2025-Jul-25
+
 ## 1.12.0
 
 Released 2025-Apr-29