What's New updated for significant refinements in 4.3.3

src/asciidoc/whats-new.adoc

@@ -631,6 +631,7 @@ public @interface MyTestConfig {
 
 * Core container exceptions provide richer metadata to evaluate programmatically.
 * Java 8 default methods get detected as bean property getters/setters.
+* Lazy candidate beans are not being created in case of injecting a primary bean.
 * It is no longer necessary to specify the `@Autowired` annotation if the target
   bean only defines one constructor.
 * `@Configuration` classes support constructor injection.
@@ -640,6 +641,8 @@ public @interface MyTestConfig {
   with a single element of the component type of the array. For example, the
   `String[] path` attribute of `@RequestMapping` can be overridden with
   `String path` in a composed annotation.
+* `@PersistenceContext`/`@PersistenceUnit` selects a primary `EntityManagerFactory`
+   bean if declared as such.
 * `@Scheduled` and `@Schedules` may now be used as _meta-annotations_ to create
   custom _composed annotations_ with attribute overrides.
 * `@Scheduled` is properly supported on beans of any scope.
@@ -688,6 +691,7 @@ Spring 4.3 also improves the caching abstraction as follows:
 * New `@SessionAttribute` annotation for access to session attributes (see <<mvc-ann-sessionattrib-global, example>>).
 * New `@RequestAttribute` annotation for access to request attributes (see <<mvc-ann-requestattrib, example>>).
 * `@ModelAttribute` allows preventing data binding via `binding=false` attribute (see <<mvc-ann-modelattrib-method-args, reference>>).
+* `@PathVariable` may be declared as optional (for use on `@ModelAttribute` methods).
 * Consistent exposure of Errors and custom Throwables to MVC exception handlers.
 * Consistent charset handling in HTTP message converters, including a UTF-8 default for multipart text content.
 * Static resource handling uses the configured `ContentNegotiationManager` for media type determination.
@@ -730,11 +734,13 @@ Spring 4.3 also improves the caching abstraction as follows:
 === Support for new library and server generations
 
 * Hibernate ORM 5.2 (still supporting 4.2/4.3 and 5.0/5.1 as well, with 3.6 deprecated now)
+* Hibernate Validator 5.3 (minimum remains at 4.3)
 * Jackson 2.8 (minimum raised to Jackson 2.6+ as of Spring 4.3)
 * OkHttp 3.x (still supporting OkHttp 2.x side by side)
+* Tomcat 8.5 as well as 9.0 milestones
 * Netty 4.1
 * Undertow 1.4
-* Tomcat 8.5.2 as well as 9.0 M6
+* WildFly 10.1
 
-Furthermore, Spring Framework 4.3 embeds the updated ASM 5.1 and Objenesis 2.4 in
-`spring-core.jar`.
+Furthermore, Spring Framework 4.3 embeds the updated ASM 5.1, CGLIB 3.2.4, and Objenesis 2.4
+in `spring-core.jar`.