diff --git a/src/Shared/AWS/AWSSemanticConventions.cs b/src/Shared/AWS/AWSSemanticConventions.cs
index c6c771dc99..46c5a59b6d 100644
--- a/src/Shared/AWS/AWSSemanticConventions.cs
+++ b/src/Shared/AWS/AWSSemanticConventions.cs
@@ -66,7 +66,11 @@ internal partial class AWSSemanticConventions
     /// Per SemanticConventionVersion, default should stay as
     /// <see cref="SemanticConventionVersion.V1_28_0"/> until next major version bump.
     /// </remarks>
-    internal const SemanticConventionVersion DefaultSemanticConventionVersion = SemanticConventionVersion.V1_28_0;
+    internal const SemanticConventionVersion DefaultSemanticConventionVersion =
+        // Beta Release
+        SemanticConventionVersion.Legacy;
+        // RC Release
+        //SemanticConventionVersion.V1_28_0;
 
     private readonly SemanticConventionVersion semanticConventionVersion;
 
@@ -488,6 +492,9 @@ private AWSSemanticConventionsBase GetSemanticConventionVersion()
             case SemanticConventionVersion.V1_28_0:
                 return new AWSSemanticConventions_V1_28_0();
 
+            case SemanticConventionVersion.Legacy:
+                return new AWSSemanticConventionsLegacy();
+
             default:
                 throw new InvalidEnumArgumentException(
                     argumentName: nameof(SemanticConventionVersion),
diff --git a/src/Shared/AWS/SemanticConventionVersion.cs b/src/Shared/AWS/SemanticConventionVersion.cs
index 53c6156878..e00e600699 100644
--- a/src/Shared/AWS/SemanticConventionVersion.cs
+++ b/src/Shared/AWS/SemanticConventionVersion.cs
@@ -73,6 +73,18 @@ public enum SemanticConventionVersion
     /// </summary>
     Latest = 0,
 
+    /// <summary>
+    /// Represents the mixture of Semantic Conventions used in OpenTelemetry.*.AWS libraries
+    /// in 1.10.0-beta.x.
+    /// <para />
+    /// This allows users to upgrade to the latest beta nuget package without experiencing a change in
+    /// Semantic Convention output.  Then there is an opportunity for users to trial <see cref="V1_28_0"/>.
+    /// <para />
+    /// This option will be REMOVED in the next Release Candidate.
+    /// </summary>
+    [Obsolete("This will be removed in the 1.10.0-RC", error: false)]
+    Legacy = -1,
+
     /// <summary>
     /// Pin to the specific state of all Semantic Conventions as of the 1.28.0
     /// release. See: