diff --git a/release-tools/pom.xml b/release-tools/pom.xml
index 4ee03d6..30eef71 100644
--- a/release-tools/pom.xml
+++ b/release-tools/pom.xml
@@ -33,6 +33,11 @@
 			<artifactId>spring-web</artifactId>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.data</groupId>
+			<artifactId>spring-data-commons</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-databind</artifactId>
diff --git a/release-tools/src/main/java/org/springframework/data/release/Streamable.java b/release-tools/src/main/java/org/springframework/data/release/Streamable.java
deleted file mode 100644
index d347eea..0000000
--- a/release-tools/src/main/java/org/springframework/data/release/Streamable.java
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright 2016 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.release;
-
-import java.util.stream.Stream;
-import java.util.stream.StreamSupport;
-
-/**
- * SImple interface to ease streamability of {@link Iterable}s.
- * 
- * @author Oliver Gierke
- */
-public interface Streamable<T> extends Iterable<T> {
-
-	/**
-	 * Creates a non-parallel {@link Stream} of the underlying {@link Iterable}.
-	 * 
-	 * @return will never be {@literal null}.
-	 */
-	public default Stream<T> stream() {
-		return StreamSupport.stream(spliterator(), false);
-	}
-}
diff --git a/release-tools/src/main/java/org/springframework/data/release/build/BuildExecutor.java b/release-tools/src/main/java/org/springframework/data/release/build/BuildExecutor.java
index 5bcbd82..6046998 100644
--- a/release-tools/src/main/java/org/springframework/data/release/build/BuildExecutor.java
+++ b/release-tools/src/main/java/org/springframework/data/release/build/BuildExecutor.java
@@ -39,11 +39,11 @@ import java.util.stream.Collector;
 
 import javax.annotation.PreDestroy;
 
-import org.springframework.data.release.Streamable;
 import org.springframework.data.release.model.Project;
 import org.springframework.data.release.model.ProjectAware;
 import org.springframework.data.release.utils.ListWrapperCollector;
 import org.springframework.data.release.utils.Logger;
+import org.springframework.data.util.Streamable;
 import org.springframework.plugin.core.PluginRegistry;
 import org.springframework.stereotype.Component;
 import org.springframework.util.Assert;
diff --git a/release-tools/src/main/java/org/springframework/data/release/git/TicketBranches.java b/release-tools/src/main/java/org/springframework/data/release/git/TicketBranches.java
index 87ce825..fa74cad 100644
--- a/release-tools/src/main/java/org/springframework/data/release/git/TicketBranches.java
+++ b/release-tools/src/main/java/org/springframework/data/release/git/TicketBranches.java
@@ -15,23 +15,23 @@
  */
 package org.springframework.data.release.git;
 
+import lombok.EqualsAndHashCode;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import org.springframework.data.release.Streamable;
 import org.springframework.data.release.issues.Ticket;
+import org.springframework.data.util.Streamable;
 import org.springframework.util.Assert;
 
-import lombok.EqualsAndHashCode;
-import lombok.NonNull;
-import lombok.RequiredArgsConstructor;
-
 /**
  * Value object to represent a collection of {@link Branch}es with assigned tickets.
- * 
+ *
  * @author Mark Paluch
  * @author Oliver Gierke
  */
@@ -44,7 +44,7 @@ public class TicketBranches implements Streamable<Branch> {
 	/**
 	 * Returns whether there's a ticket available for the given {@link Branch}. If {@code requireResolved} is set to
 	 * {@literal true} the answer will only be true if the available ticket is marked resolved.
-	 * 
+	 *
 	 * @param branch must not be {@literal null}.
 	 * @param requireResolved whether the {@link Ticket} we look for is required to be resolved.
 	 * @return
@@ -60,7 +60,7 @@ public class TicketBranches implements Streamable<Branch> {
 
 	/**
 	 * Returns a {@link TicketBranches} containing only the branches for which resolved {@link Ticket}s are found.
-	 * 
+	 *
 	 * @return
 	 */
 	public TicketBranches getResolvedTickets() {
@@ -72,7 +72,7 @@ public class TicketBranches implements Streamable<Branch> {
 
 	/**
 	 * Returns the ticket for the given {@link Branch}.
-	 * 
+	 *
 	 * @param branch must not be {@literal null}.
 	 * @return
 	 */
diff --git a/release-tools/src/main/java/org/springframework/data/release/git/VersionTags.java b/release-tools/src/main/java/org/springframework/data/release/git/VersionTags.java
index 4692a1d..8189086 100644
--- a/release-tools/src/main/java/org/springframework/data/release/git/VersionTags.java
+++ b/release-tools/src/main/java/org/springframework/data/release/git/VersionTags.java
@@ -21,14 +21,14 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.stream.Collectors;
 
-import org.springframework.data.release.Streamable;
 import org.springframework.data.release.model.ArtifactVersion;
 import org.springframework.data.release.model.ModuleIteration;
+import org.springframework.data.util.Streamable;
 import org.springframework.util.Assert;
 
 /**
  * Value object to represent a collection of {@link Tag}s.
- * 
+ *
  * @author Oliver Gierke
  */
 @EqualsAndHashCode
@@ -38,7 +38,7 @@ public class VersionTags implements Streamable<Tag> {
 
 	/**
 	 * Creates a new {@link VersionTags} instance for the given {@link List} of {@link Tag}s.
-	 * 
+	 *
 	 * @param source must not be {@literal null}.
 	 */
 	VersionTags(List<Tag> source) {
@@ -52,7 +52,7 @@ public class VersionTags implements Streamable<Tag> {
 
 	/**
 	 * Returns the latest {@link Tag}.
-	 * 
+	 *
 	 * @return
 	 */
 	public Tag getLatest() {
@@ -65,14 +65,14 @@ public class VersionTags implements Streamable<Tag> {
 
 	/**
 	 * Returns all {@link Tag}s as {@link List}.
-	 * 
+	 *
 	 * @return
 	 */
 	public List<Tag> asList() {
 		return tags;
 	}
 
-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see java.lang.Iterable#iterator()
 	 */
diff --git a/release-tools/src/main/java/org/springframework/data/release/issues/Tickets.java b/release-tools/src/main/java/org/springframework/data/release/issues/Tickets.java
index 58d363a..451df6a 100644
--- a/release-tools/src/main/java/org/springframework/data/release/issues/Tickets.java
+++ b/release-tools/src/main/java/org/springframework/data/release/issues/Tickets.java
@@ -25,10 +25,10 @@ import java.util.Optional;
 import java.util.stream.Collector;
 import java.util.stream.Stream;
 
-import org.springframework.data.release.Streamable;
 import org.springframework.data.release.model.ModuleIteration;
 import org.springframework.data.release.model.TrainIteration;
 import org.springframework.data.release.utils.ListWrapperCollector;
+import org.springframework.data.util.Streamable;
 import org.springframework.util.StringUtils;
 
 /**
diff --git a/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraIssues.java b/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraIssues.java
index f650a31..677769a 100644
--- a/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraIssues.java
+++ b/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraIssues.java
@@ -22,7 +22,7 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
-import org.springframework.data.release.Streamable;
+import org.springframework.data.util.Streamable;
 
 /**
  * @author Oliver Gierke
@@ -46,7 +46,7 @@ class JiraIssues implements Streamable<JiraIssue> {
 		return !issues.isEmpty();
 	}
 
-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see java.lang.Iterable#iterator()
 	 */
diff --git a/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraReleaseVersions.java b/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraReleaseVersions.java
index c51e346..bfd148d 100644
--- a/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraReleaseVersions.java
+++ b/release-tools/src/main/java/org/springframework/data/release/issues/jira/JiraReleaseVersions.java
@@ -21,11 +21,11 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
-import org.springframework.data.release.Streamable;
+import org.springframework.data.util.Streamable;
 
 /**
  * Value object to bind REST responses to.
- * 
+ *
  * @author Mark Paluch
  */
 @Value
diff --git a/release-tools/src/main/java/org/springframework/data/release/model/Modules.java b/release-tools/src/main/java/org/springframework/data/release/model/Modules.java
index 1c24d28..d846595 100644
--- a/release-tools/src/main/java/org/springframework/data/release/model/Modules.java
+++ b/release-tools/src/main/java/org/springframework/data/release/model/Modules.java
@@ -19,12 +19,12 @@ import java.util.Collection;
 import java.util.Iterator;
 import java.util.TreeSet;
 
-import org.springframework.data.release.Streamable;
+import org.springframework.data.util.Streamable;
 
 /**
  * A {@link Streamable} set of modules. Makes sure the stream order will match the natural dependency order of the given
  * {@link Module} instances.
- * 
+ *
  * @author Oliver Gierke
  */
 class Modules implements Streamable<Module> {
diff --git a/release-tools/src/main/java/org/springframework/data/release/model/ReleaseTrains.java b/release-tools/src/main/java/org/springframework/data/release/model/ReleaseTrains.java
index 29257ff..99719d9 100644
--- a/release-tools/src/main/java/org/springframework/data/release/model/ReleaseTrains.java
+++ b/release-tools/src/main/java/org/springframework/data/release/model/ReleaseTrains.java
@@ -62,7 +62,8 @@ public class ReleaseTrains {
 				new Module(MONGO_DB, "3.0"), //
 				new Module(JDBC, "2.0"), //
 				new Module(R2DBC, "1.1")) //
-				.filter(module -> !module.getProject().equals(GEMFIRE)).withIterations(new Train.Iterations(M1, M2, M3, RC1, GA));
+				.filterModules(module -> !module.getProject().equals(GEMFIRE))
+				.withIterations(new Train.Iterations(M1, M2, M3, M4, RC1, GA));
 
 		// Trains
 
diff --git a/release-tools/src/main/java/org/springframework/data/release/model/Train.java b/release-tools/src/main/java/org/springframework/data/release/model/Train.java
index 55ffe8f..e575c29 100644
--- a/release-tools/src/main/java/org/springframework/data/release/model/Train.java
+++ b/release-tools/src/main/java/org/springframework/data/release/model/Train.java
@@ -36,7 +36,7 @@ import java.util.stream.Stream;
 
 import org.apache.commons.io.IOUtils;
 
-import org.springframework.data.release.Streamable;
+import org.springframework.data.util.Streamable;
 import org.springframework.util.Assert;
 
 /**
@@ -115,7 +115,7 @@ public class Train implements Streamable<Module> {
 		return new Train(name, collect);
 	}
 
-	public Train filter(Predicate<Module> filterPredicate) {
+	public Train filterModules(Predicate<Module> filterPredicate) {
 		return new Train(name, getModules().stream().filter(filterPredicate).collect(Collectors.toList()));
 	}
 
diff --git a/release-tools/src/main/java/org/springframework/data/release/model/TrainIteration.java b/release-tools/src/main/java/org/springframework/data/release/model/TrainIteration.java
index 4078332..738ede2 100644
--- a/release-tools/src/main/java/org/springframework/data/release/model/TrainIteration.java
+++ b/release-tools/src/main/java/org/springframework/data/release/model/TrainIteration.java
@@ -21,7 +21,7 @@ import lombok.Value;
 import java.util.Iterator;
 import java.util.List;
 
-import org.springframework.data.release.Streamable;
+import org.springframework.data.util.Streamable;
 
 /**
  * @author Oliver Gierke
diff --git a/release-tools/src/main/java/org/springframework/data/release/sagan/MaintainedVersions.java b/release-tools/src/main/java/org/springframework/data/release/sagan/MaintainedVersions.java
index 370fae2..4d07c8f 100644
--- a/release-tools/src/main/java/org/springframework/data/release/sagan/MaintainedVersions.java
+++ b/release-tools/src/main/java/org/springframework/data/release/sagan/MaintainedVersions.java
@@ -23,12 +23,12 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.stream.Collectors;
 
-import org.springframework.data.release.Streamable;
 import org.springframework.data.release.model.ArtifactVersion;
+import org.springframework.data.util.Streamable;
 
 /**
  * Wrapper type for a {@link List} of {@link MaintainedVersion}.
- * 
+ *
  * @author Oliver Gierke
  */
 @ToString
@@ -40,7 +40,7 @@ class MaintainedVersions implements Streamable<MaintainedVersion> {
 	/**
 	 * Creates a new {@link MaintainedVersions} with the given {@link MaintainedVersion}s in descending order (more recent
 	 * versions first).
-	 * 
+	 *
 	 * @param versions must not be {@literal null}.
 	 * @return
 	 */
@@ -54,7 +54,7 @@ class MaintainedVersions implements Streamable<MaintainedVersion> {
 	/**
 	 * Creates a new {@link MaintainedVersions} with the given {@link MaintainedVersion}s in descending order (more recent
 	 * versions first).
-	 * 
+	 *
 	 * @param versions must not be {@literal null}.
 	 * @return
 	 */
@@ -64,7 +64,7 @@ class MaintainedVersions implements Streamable<MaintainedVersion> {
 
 	/**
 	 * Returns whether the given {@link MaintainedVersion} is the main version of the current set.
-	 * 
+	 *
 	 * @param version must not be {@literal null}.
 	 * @return
 	 */
@@ -82,7 +82,7 @@ class MaintainedVersions implements Streamable<MaintainedVersion> {
 				.orElse(false);
 	}
 
-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see java.lang.Iterable#iterator()
 	 */
diff --git a/release-tools/src/main/java/org/springframework/data/release/utils/ExecutionUtils.java b/release-tools/src/main/java/org/springframework/data/release/utils/ExecutionUtils.java
index 8419d28..74d7ee5 100644
--- a/release-tools/src/main/java/org/springframework/data/release/utils/ExecutionUtils.java
+++ b/release-tools/src/main/java/org/springframework/data/release/utils/ExecutionUtils.java
@@ -24,7 +24,7 @@ import java.util.function.Function;
 import java.util.stream.Collector;
 import java.util.stream.Collectors;
 
-import org.springframework.data.release.Streamable;
+import org.springframework.data.util.Streamable;
 import org.springframework.util.Assert;
 
 /**
@@ -75,7 +75,7 @@ public class ExecutionUtils {
 			Collector<? super S, ?, R> collector) {
 
 		Assert.notNull(streamable, "Iterable must not be null!");
-		Assert.notNull(function, "Consumer must not be null!");
+		Assert.notNull(function, "Function must not be null!");
 
 		return streamable.stream().//
 				map(it -> CompletableFuture.supplyAsync(() -> function.apply(it))).//