INT-2426: Add What's New note

Author: artembilan

src/reference/docbook/handler-advice.xml

@@ -582,4 +582,10 @@ public class MyAdvisedFilter {
 			the transaction, you would put the transaction advice first.
 		</para>
 	</section>
+	<section id="idempotent-receiver">
+		<title>Idempotent Receiver EIP Pattern</title>
+		<para>
+			TBD
+		</para>
+	</section>
 </section>

src/reference/docbook/meta-data-store.xml

@@ -47,8 +47,8 @@
 		<classname>RedisMetadataStore</classname> implement <interfacename>ConcurrentMetadataStore</interfacename>.
 		These provide for atomic updates and can be used across multiple component or application instances.
 	</para>
-	<section id="idempotent-receiver">
-		<title>Idempotent Receiver</title>
+	<section id="idempotent-receiver-pattern">
+		<title>Idempotent Receiver and Metadata Store</title>
 		<para>
 			The <emphasis>Metadata Store</emphasis> is useful for implementing the
 			EIP <ulink url="http://eaipatterns.com/IdempotentReceiver.html">Idempotent Receiver</ulink> pattern, when
@@ -70,6 +70,9 @@
 			The <code>value</code> of the idempotent entry may be some expiration date, after which that entry should
 			be removed from <emphasis>Metadata Store</emphasis> by some scheduled reaper.
 		</para>
+		<para>
+			Also see <xref linkend="idempotent-receiver"/>.
+		</para>
 	</section>
 
 </section>

src/reference/docbook/whats-new.xml

@@ -41,6 +41,16 @@
 				See <xref linkend="routing-slip"/> for more information.
 			</para>
 		</section>
+		<section id="4.1-idempotent-receiver">
+			<title>Idempotent Receiver Pattern</title>
+			<para>
+				The <emphasis>Idempotent Receiver</emphasis> EIP pattern implementation is now provided.
+				It is presented as <code>&lt;idempotent-receiver&gt;</code> component and
+				<classname>IdempotentReceiverInterceptor</classname> and
+				<interfacename>IdempotentReceiver</interfacename> annotation pair.
+				See <xref linkend="idempotent-receiver"/> and their JavaDocs for more information.
+			</para>
+		</section>
 		<section id="4.1-BoonJsonObjectMapper">
 			<title>BoonJsonObjectMapper</title>
 			<para>