diff --git a/build.gradle b/build.gradle
index 24e5d1c5e5..c8a684a3fc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -122,7 +122,7 @@ subprojects { subproject ->
 		slf4jVersion = "1.7.21"
 		tomcatVersion = "8.0.33"
 		smackVersion = '4.1.7'
-		springAmqpVersion = project.hasProperty('springAmqpVersion') ? project.springAmqpVersion : '2.0.0.M1'
+		springAmqpVersion = project.hasProperty('springAmqpVersion') ? project.springAmqpVersion : '2.0.0.BUILD-SNAPSHOT'
 		springDataJpaVersion = '2.0.0.M1'
 		springDataMongoVersion = '2.0.0.M1'
 		springDataRedisVersion = '2.0.0.M1'
@@ -130,7 +130,7 @@ subprojects { subproject ->
 		springSecurityVersion = '4.2.0.RELEASE'
 		springSocialTwitterVersion = '1.1.2.RELEASE'
 		springRetryVersion = '1.2.0.RC1'
-		springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.0.0.M3'
+		springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.0.0.BUILD-SNAPSHOT'
 		springWsVersion = '2.4.0.RELEASE'
 		xmlUnitVersion = '1.6'
 		xstreamVersion = '1.4.7'
diff --git a/src/reference/asciidoc/preface.adoc b/src/reference/asciidoc/preface.adoc
index dcd7eb6451..4fa9c9c714 100644
--- a/src/reference/asciidoc/preface.adoc
+++ b/src/reference/asciidoc/preface.adoc
@@ -10,20 +10,13 @@ This section details the compatible http://www.oracle.com/technetwork/java/javas
 [[supported-java-versions]]
 === Compatible Java Versions
 
-For _Spring Integration_ *4.3.x*, the *minimum* compatible Java version is *Java SE 6*.
+For _Spring Integration_ *5.0.x*, the *minimum* compatible Java version is *Java SE 8*.
 Older versions of Java are not supported.
 
-_Spring Integration_ *4.3.x* is also compatible with *Java SE 7* as well as *Java SE 8*.
-
-Certain features (such as `Optional<?>` payloads and `CompletableFuture` gateway method return types) require Java 8.
-
-While the jars are compatible with Java 6, Java 8 is required to build the project.
-see https://github.com/spring-projects/spring-integration#checking-out-and-building[Checking out and Building].
-
 [[supported-spring-versions]]
 === Compatible Versions of the Spring Framework
 
-_Spring Integration_ *4.3.x* requires _Spring Framework_ *4.3* or later.
+_Spring Integration_ *5.0.x* requires _Spring Framework_ *5.0* or later.
 
 [[code-conventions]]
 === Code Conventions