diff --git a/.github/workflows/ReleaseNotes.md b/.github/workflows/ReleaseNotes.md
index e1b28022..e8811df2 100644
--- a/.github/workflows/ReleaseNotes.md
+++ b/.github/workflows/ReleaseNotes.md
@@ -1,9 +1 @@
-* [Core] Updated nuget packages.
-* [Core] The option _IgnoreCertificateChainErrors_ is now respected (thanks to @GodVenn, #1447).
-* [ManagedClient] The managed client now sends the entire topic filter including new MQTTv5 properties when subscribing.
-* [ManagedClient] Fixed wrong firing of _ApplicationMessageSkippedAsync_ event (thanks to @quackgizmo, #1460).
-* [Server] Fixed reporting of _MaximumQoS_ in _ConnAck_ packet (MQTTv5 only) (#1442).
-* [Server] Fix cross thread issue in session message storage for QoS 1 and 2.
-* [Server] The event _ClientSubscribedTopicAsync_ is now fired after the subscription is completely processed internally (#1435).
-* [Server] Improved CPU usage on lower end machines (#788).
-* [Client] Added support for passing the local endpoint which should be used (network card).
\ No newline at end of file
+* [Client] Added support for passing the local endpoint which should be used (network card).
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 359fb294..cb2c15da 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,7 +3,7 @@ name: CI
 on: [push, pull_request]
 
 env:
-  VERSION: "4.0.2.${{github.run_number}}"
+  VERSION: "4.1.0.${{github.run_number}}"
 
 jobs:
   build:
diff --git a/Source/MQTTnet/Client/Receiving/MqttApplicationMessageReceivedEventArgs.cs b/Source/MQTTnet/Client/Receiving/MqttApplicationMessageReceivedEventArgs.cs
index c288ab26..4bf1c17c 100644
--- a/Source/MQTTnet/Client/Receiving/MqttApplicationMessageReceivedEventArgs.cs
+++ b/Source/MQTTnet/Client/Receiving/MqttApplicationMessageReceivedEventArgs.cs
@@ -25,6 +25,7 @@ namespace MQTTnet.Client
             ClientId = clientId;
             ApplicationMessage = applicationMessage ?? throw new ArgumentNullException(nameof(applicationMessage));
             PublishPacket = publishPacket;
+            PacketIdentifier = publishPacket.PacketIdentifier;
             _acknowledgeHandler = acknowledgeHandler;
         }
 
@@ -62,12 +63,17 @@ namespace MQTTnet.Client
         public bool IsHandled { get; set; }
 
         /// <summary>
-        /// Gets ir sets whether the library should send MQTT ACK packets automatically if required.
+        /// Gets or sets whether the library should send MQTT ACK packets automatically if required.
         /// </summary>
         public bool AutoAcknowledge { get; set; } = true;
         
         public object Tag { get; set; }
-        
+
+        /// <summary>
+        /// Gets the indentifier of MQTT packet
+        /// </summary>
+        public ushort PacketIdentifier { get; }
+
         public Task AcknowledgeAsync(CancellationToken cancellationToken) 
         {
             if (_acknowledgeHandler == null)