Deprecation doc polishing

Channel interceptors.

src/reference/asciidoc/channel.adoc

@@ -294,6 +294,9 @@ Starting with _Spring Framework 4.1_ and Spring Integration 4.1, the `ChannelInt
 They are invoked after `send()/receive()` calls, regardless of any exception that is raised, thus allowing for resource cleanup.
 Note, the Channel invokes these methods on the ChannelInterceptor List in the reverse order of the initial `preSend()/preReceive()` calls.
 
+Starting with _version 5.1_, global channel interceptors are now applied to channels registered dynamically - such as via the `IntegrationFlowContext` when using the Java DSL, or beans that are initialized using `beanFactory.initializeBean()`.
+Previously, interceptors were not applied when beans were created after the application context was refreshed.
+
 [[channel-template]]
 ==== MessagingTemplate
 

src/reference/asciidoc/overview.adoc

@@ -413,6 +413,9 @@ This annotation is an analogue of the `<int:channel-interceptor>` xml element (s
 `@GlobalChannelInterceptor` annotations can be placed at the class level (with a `@Component` stereotype annotation), or on `@Bean` methods within `@Configuration` classes.
 In either case, the bean *must* be a `ChannelInterceptor`.
 
+Starting with _version 5.1_, global channel interceptors are now applied to channels registered dynamically - such as via the `IntegrationFlowContext` when using the Java DSL, or beans that are initialized using `beanFactory.initializeBean()`.
+Previously, interceptors were not applied when beans were created after the application context was refreshed.
+
 The `@IntegrationConverter` annotation has been introduced to mark `Converter`, `GenericConverter` or `ConverterFactory` beans as candidate converters for `integrationConversionService`.
 This annotation is an analogue of the `<int:converter>` xml element (see <<payload-type-conversion>>).
 `@IntegrationConverter` annotations can be placed at the class level (with a `@Component` stereotype annotation), or on `@Bean` methods within `@Configuration` classes.

src/reference/asciidoc/whats-new.adoc

@@ -33,3 +33,8 @@ Previously:
 - A `MessagingException`, with no `failedMessage` property, was wrapped in a `MessagingException` with the `failedMessage` property set
 - Other `RuntimeException` s were re-thrown unchanged
 - Checked exceptions were wrapped in a `MessageDeliveryException` with the `failedMessage` property set
+
+==== Global Channel Interceptors
+
+Global channel interceptors are now applied to channels registered dynamically - such as via the `IntegrationFlowContext` when using the Java DSL, or beans that are initialized using `beanFactory.initializeBean()`.
+Previously, interceptors were not applied when beans were created after the application context was refreshed.