diff --git a/include/etl/observer.h b/include/etl/observer.h
index dcc1edb3..6332a6cf 100644
--- a/include/etl/observer.h
+++ b/include/etl/observer.h
@@ -176,6 +176,16 @@ namespace etl
     ///\tparam TNotification the notification type.
     ///\param n The notification.
     //*****************************************************************
+#if ETL_CPP11_SUPPORTED && !defined(ETL_OBSERVER_FORCE_CPP03)
+    template <typename... TNotification>
+    void notify_observers(TNotification... n)
+    {
+      for (auto observer : observer_list)
+      {
+        observer->notification(n...);
+      }
+    }
+#else
     template <typename TNotification>
     void notify_observers(TNotification n)
     {
@@ -184,6 +194,8 @@ namespace etl
         observer_list[i]->notification(n);
       }
     }
+#endif
+
 
   protected:
 
diff --git a/include/etl/version.h b/include/etl/version.h
index 97ee6ab1..5edbdfc9 100644
--- a/include/etl/version.h
+++ b/include/etl/version.h
@@ -39,7 +39,7 @@ SOFTWARE.
 
 #define ETL_VERSION_MAJOR 14
 #define ETL_VERSION_MINOR 26
-#define ETL_VERSION_PATCH  5
+#define ETL_VERSION_PATCH  6
 
 #define ETL_VERSION       ETL_STRINGIFY(ETL_VERSION_MAJOR) ETL_STRINGIFY(ETL_VERSION_MINOR) ETL_STRINGIFY(ETL_VERSION_PATCH)
 #define ETL_VERSION_W     ETL_WIDE_STRING(ETL_CONCAT(ETL_CONCAT(ETL_VERSION_MAJOR, ETL_VERSION_MINOR), ETL_VERSION_PATCH))
diff --git a/support/Release notes.txt b/support/Release notes.txt
index c92f7929..a50d4076 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -1,3 +1,7 @@
+===============================================================================
+14.26.6
+Added variadic parameters to observer notification.
+
 ===============================================================================
 14.26.5
 Fixed misplaced semicolon in error_handler.h