diff --git a/build.xml b/build.xml
index 5f7d65bb951f..c9635aa28410 100644
--- a/build.xml
+++ b/build.xml
@@ -5,7 +5,7 @@
 	<property name="src" value="src/main/java" />
 	<property name="target" location="target" />
 	<property name="bin" location="${target}/main" />
-	<property name="version-base" value="4.8.2" />
+	<property name="version-base" value="4.9-SNAPSHOT-20100512-0041" />
 	<property name="version-status" value="" />
 	<property name="version" value="${version-base}${version-status}" />
 	<property name="dist" value="junit${version}" />
diff --git a/doc/ReleaseNotes4.9-SNAPSHOT-20100512-0041.html b/doc/ReleaseNotes4.9-SNAPSHOT-20100512-0041.html
new file mode 100644
index 000000000000..6b99bb39dd9c
--- /dev/null
+++ b/doc/ReleaseNotes4.9-SNAPSHOT-20100512-0041.html
@@ -0,0 +1,4 @@
+
+Can't open /Users/saff/Documents/git-repos/junit/doc/ReleaseNotes4.9-SNAPSHOT-20100512-0041.txt: No such file or directory at build/Markdown.pl line 218.
+Use of uninitialized value in substitution (s///) at build/Markdown.pl line 245.
+Use of uninitialized value in substitution (s///) at build/Markdown.pl line 246.
diff --git a/doc/ReleaseNotes4.9.html b/doc/ReleaseNotes4.9.html
new file mode 100644
index 000000000000..a320c9b85cea
--- /dev/null
+++ b/doc/ReleaseNotes4.9.html
@@ -0,0 +1,28 @@
+<h2>Summary of Changes in version 4.9</h2>
+
+<h3>SuiteBuilder</h3>
+
+<p>A new way of declaring suites to run.  SuiteBuilder allows for flexible
+specification of where to find the classes containing tests, and how
+to filter the resulting runners.  This suite class lists the
+explicit test classes to consider running, and then filters it down
+to only those tests or classes annotated with <code>@Category(Yes.class)</code>:</p>
+
+<pre><code>@RunWith(SuiteBuilder.class)
+public static class OnlyYes {
+    @Classes
+    public Listed classes= new Listed(Yes1.class, Yes2.class, No1.class);
+
+    @RunnerFilter
+    public CategoryFilter filter= CategoryFilter.include(Yes.class);
+}
+</code></pre>
+
+<p>We hope to soon include other implementations for the @Classes annotation,
+including a classpath-searching test gatherer.</p>
+
+<h3>Bug fixes</h3>
+
+<ul>
+<li>github#98: assumeTrue() does not work with expected exceptions</li>
+</ul>
diff --git a/doc/ReleaseNotes4.9.txt b/doc/ReleaseNotes4.9.txt
index cbee7e45b8b0..ae4a5027254a 100644
--- a/doc/ReleaseNotes4.9.txt
+++ b/doc/ReleaseNotes4.9.txt
@@ -1,5 +1,25 @@
 ## Summary of Changes in version 4.9 ##
 
+### SuiteBuilder ###
+
+A new way of declaring suites to run.  SuiteBuilder allows for flexible
+specification of where to find the classes containing tests, and how
+to filter the resulting runners.  This suite class lists the
+explicit test classes to consider running, and then filters it down
+to only those tests or classes annotated with `@Category(Yes.class)`:
+
+	@RunWith(SuiteBuilder.class)
+	public static class OnlyYes {
+		@Classes
+		public Listed classes= new Listed(Yes1.class, Yes2.class, No1.class);
+
+		@RunnerFilter
+		public CategoryFilter filter= CategoryFilter.include(Yes.class);
+	}
+	
+We hope to soon include other implementations for the @Classes annotation,
+including a classpath-searching test gatherer.
+
 ### Bug fixes ###
 
 - github#98: assumeTrue() does not work with expected exceptions
\ No newline at end of file
diff --git a/src/main/java/junit/runner/Version.java b/src/main/java/junit/runner/Version.java
index 5f5938640408..9e9366430d0b 100644
--- a/src/main/java/junit/runner/Version.java
+++ b/src/main/java/junit/runner/Version.java
@@ -9,7 +9,7 @@ private Version() {
 	}
 
 	public static String id() {
-		return "4.8.2";
+		return "4.9-SNAPSHOT-20100512-0041";
 	}
 	
 	public static void main(String[] args) {
diff --git a/src/main/java/org/junit/experimental/categories/CategoryFilter.java b/src/main/java/org/junit/experimental/categories/CategoryFilter.java
index 5f7514de1cf8..8d51ca2bf443 100644
--- a/src/main/java/org/junit/experimental/categories/CategoryFilter.java
+++ b/src/main/java/org/junit/experimental/categories/CategoryFilter.java
@@ -8,10 +8,10 @@
 import java.util.Arrays;
 import java.util.List;
 
+import org.junit.experimental.runners.SuiteBuilder;
 import org.junit.runner.Runner;
-import org.junit.tests.experimental.categories.SuiteBuilderTest.RunnerFilter;
 
-public class CategoryFilter implements RunnerFilter.Value {
+public class CategoryFilter implements SuiteBuilder.RunnerFilter.Value {
 	private final Class<?> fIncluded;
 
 	public CategoryFilter(Class<?> included) {
diff --git a/src/main/java/org/junit/experimental/runners/Listed.java b/src/main/java/org/junit/experimental/runners/Listed.java
new file mode 100644
index 000000000000..83ec2dc522e5
--- /dev/null
+++ b/src/main/java/org/junit/experimental/runners/Listed.java
@@ -0,0 +1,19 @@
+/**
+ * 
+ */
+package org.junit.experimental.runners;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class Listed implements SuiteBuilder.Classes.Value {
+	private final Class<?>[] fClasses;
+
+	public Listed(Class<?>... classes) {
+		fClasses= classes;
+	}
+
+	public List<? extends Class<?>> get() {
+		return Arrays.asList(fClasses);
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/org/junit/experimental/runners/SuiteBuilder.java b/src/main/java/org/junit/experimental/runners/SuiteBuilder.java
new file mode 100644
index 000000000000..b02855960c64
--- /dev/null
+++ b/src/main/java/org/junit/experimental/runners/SuiteBuilder.java
@@ -0,0 +1,99 @@
+/**
+ * 
+ */
+package org.junit.experimental.runners;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.junit.internal.builders.AllDefaultPossibilitiesBuilder;
+import org.junit.runner.Description;
+import org.junit.runner.Runner;
+import org.junit.runner.notification.RunNotifier;
+import org.junit.runners.model.InitializationError;
+import org.junit.runners.model.TestClass;
+
+public class SuiteBuilder extends Runner {
+	@Retention(RetentionPolicy.RUNTIME)
+	public @interface RunnerFilter {
+		public static interface Value {
+			public abstract List<Runner> matchingRunners(
+					List<Runner> allPossibleRunners);
+		}
+	}
+
+	@Retention(RetentionPolicy.RUNTIME)
+	public @interface Classes {
+		public static interface Value {
+			public abstract Collection<? extends Class<?>> get();
+		}
+	}
+
+	private final TestClass fTestClass;
+	private final Object fInstance;
+	private final List<Runner> fRunners;
+
+	public SuiteBuilder(Class<?> testClass) throws InitializationError {
+		fTestClass= new TestClass(testClass);
+		fInstance = createInstance();
+		fRunners= computeRunners();
+	}
+
+	private Object createInstance() throws InitializationError {
+		try {
+			return fTestClass.getOnlyConstructor().newInstance();
+		} catch (Exception e) {
+			throw new InitializationError(e);
+		}
+	}
+
+	@Override
+	public Description getDescription() {
+		Description description= Description.createSuiteDescription(fTestClass.getJavaClass());
+		for (Runner each : fRunners) {
+			description.addChild(each.getDescription());
+		}
+		return description;
+	}
+
+	@Override
+	public void run(RunNotifier notifier) {
+		for (Runner each : fRunners)
+			each.run(notifier);
+	}
+
+	private List<Runner> computeRunners() throws InitializationError {
+		List<Class<?>> allPossibleClasses= gatherClasses();
+		List<Runner> allPossibleRunners= runnersForClasses(allPossibleClasses);
+		return filterRunners(allPossibleRunners);
+	}
+
+	private List<Runner> filterRunners(List<Runner> allPossibleRunners) {
+		List<Runner> result= allPossibleRunners;
+		for (SuiteBuilder.RunnerFilter.Value each : getFilters())
+			result= each.matchingRunners(result);
+		return result;
+	}
+
+	private List<SuiteBuilder.RunnerFilter.Value> getFilters() {
+		return fTestClass.getAnnotatedFieldValues(fInstance,
+				SuiteBuilder.RunnerFilter.class, SuiteBuilder.RunnerFilter.Value.class);
+	}
+
+	private List<Runner> runnersForClasses(List<Class<?>> allPossibleClasses) throws InitializationError {
+		return new AllDefaultPossibilitiesBuilder(true).runners(fTestClass
+				.getJavaClass(), allPossibleClasses);
+	}
+
+	public List<Class<?>> gatherClasses() {
+		ArrayList<Class<?>> result= new ArrayList<Class<?>>();
+		List<SuiteBuilder.Classes.Value> classeses= fTestClass.getAnnotatedFieldValues(
+				fInstance, SuiteBuilder.Classes.class, SuiteBuilder.Classes.Value.class);
+		for (SuiteBuilder.Classes.Value each : classeses)
+			result.addAll(each.get());
+		return result;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/org/junit/runners/model/RunnerBuilder.java b/src/main/java/org/junit/runners/model/RunnerBuilder.java
index 0e4371e1a27d..3a334be7280d 100644
--- a/src/main/java/org/junit/runners/model/RunnerBuilder.java
+++ b/src/main/java/org/junit/runners/model/RunnerBuilder.java
@@ -87,6 +87,11 @@ public List<Runner> runners(Class<?> parent, Class<?>[] children)
 		}
 	}
 	
+	public List<Runner> runners(Class<?> parent, List<Class<?>> children)
+			throws InitializationError {
+		return runners(parent, children.toArray(new Class<?>[0]));
+	}
+	
 	private List<Runner> runners(Class<?>[] children) {
 		ArrayList<Runner> runners= new ArrayList<Runner>();
 		for (Class<?> each : children) {
diff --git a/src/test/java/org/junit/tests/experimental/categories/SuiteBuilderTest.java b/src/test/java/org/junit/tests/experimental/categories/SuiteBuilderTest.java
index df7f957c9681..ed746cdb6387 100644
--- a/src/test/java/org/junit/tests/experimental/categories/SuiteBuilderTest.java
+++ b/src/test/java/org/junit/tests/experimental/categories/SuiteBuilderTest.java
@@ -5,138 +5,32 @@
 import static org.junit.experimental.results.PrintableResult.testResult;
 import static org.junit.experimental.results.ResultMatchers.isSuccessful;
 
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collection;
-import java.util.List;
 
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.junit.experimental.categories.CategoryFilter;
+import org.junit.experimental.runners.Listed;
+import org.junit.experimental.runners.SuiteBuilder;
+import org.junit.experimental.runners.SuiteBuilder.Classes;
+import org.junit.experimental.runners.SuiteBuilder.RunnerFilter;
 import org.junit.runner.Description;
 import org.junit.runner.JUnitCore;
 import org.junit.runner.Result;
 import org.junit.runner.RunWith;
 import org.junit.runner.Runner;
-import org.junit.runner.notification.RunNotifier;
 import org.junit.runners.BlockJUnit4ClassRunner;
 import org.junit.runners.model.InitializationError;
-import org.junit.runners.model.TestClass;
 
 public class SuiteBuilderTest {
-	@Retention(RetentionPolicy.RUNTIME)
-	public @interface RunnerFilter {
-		public static interface Value {
-			public abstract List<Runner> matchingRunners(
-					List<Runner> allPossibleRunners);
-		}
-	}
-
-	public static class Listed implements Classes.Value {
-		private final Class<?>[] fClasses;
-
-		public Listed(Class<?>... classes) {
-			fClasses= classes;
-		}
-
-		public List<? extends Class<?>> get() {
-			return Arrays.asList(fClasses);
-		}
-	}
-
-	// Classes -> RunnerBuilder
-
-	@Retention(RetentionPolicy.RUNTIME)
-	public @interface Classes {
-		public static interface Value {
-			public abstract Collection<? extends Class<?>> get();
-		}
-	}
-
-	public static class SuiteBuilder extends Runner {
-		private final TestClass fTestClass;
-
-		private final Object fInstance;
-
-		private final List<Runner> fRunners;
-
-		public SuiteBuilder(Class<?> testClass) throws InitializationError {
-			fTestClass= new TestClass(testClass);
-			// TODO: extract complexity
-			try {
-				fInstance= fTestClass.getOnlyConstructor().newInstance();
-			} catch (Exception e) {
-				throw new InitializationError(e);
-			}
-			fRunners= computeRunners();
-		}
-
-		@Override
-		public Description getDescription() {
-			Description description= Description.createSuiteDescription(fTestClass.getJavaClass());
-			for (Runner each : fRunners) {
-				description.addChild(each.getDescription());
-			}
-			return description;
-		}
-
-		// TODO: require an instance?
-		@Override
-		public void run(RunNotifier notifier) {
-			for (Runner each : fRunners)
-				each.run(notifier);
-		}
-
-		private List<Runner> computeRunners() {
-			List<Class<?>> allPossibleClasses= gatherClasses();
-			List<Runner> allPossibleRunners= runnersForClasses(allPossibleClasses);
-			return filterRunners(allPossibleRunners);
-		}
-
-		private List<Runner> filterRunners(List<Runner> allPossibleRunners) {
-			List<Runner> result= allPossibleRunners;
-			for (RunnerFilter.Value each : getFilters())
-				result= each.matchingRunners(result);
-			return result;
-		}
-
-		private List<RunnerFilter.Value> getFilters() {
-			return fTestClass.getAnnotatedFieldValues(fInstance,
-					RunnerFilter.class, RunnerFilter.Value.class);
-		}
-
-		private List<Runner> runnersForClasses(List<Class<?>> allPossibleClasses) {
-			// TODO: cheating
-			ArrayList<Runner> result= new ArrayList<Runner>();
-			for (Class<?> each : allPossibleClasses) {
-				try {
-					result.add(new BlockJUnit4ClassRunner(each));
-				} catch (InitializationError e) {
-					// TODO Auto-generated catch block
-					e.printStackTrace();
-				}
-			}
-			return result;
-		}
-
-		private List<Class<?>> gatherClasses() {
-			ArrayList<Class<?>> result= new ArrayList<Class<?>>();
-			List<Classes.Value> classeses= fTestClass.getAnnotatedFieldValues(
-					fInstance, Classes.class, Classes.Value.class);
-			for (Classes.Value each : classeses)
-				result.addAll(each.get());
-			return result;
-		}
-	}
-
 	static class Yes {
 	}
 
 	static class No {
 	}
 
+	// TODO: test multiple filters, multiple class sources
+	
 	@Category(Yes.class)
 	public static class Yes1 {
 		@Test
@@ -168,7 +62,7 @@ public static class OnlyYesJustOne {
 	}
 
 	@RunWith(SuiteBuilder.class)
-	public static class OnlyYesMaybeTwo {
+	public static class OnlyYes {
 		@Classes
 		public Listed classes= new Listed(Yes1.class, Yes2.class, No1.class);
 
@@ -212,9 +106,9 @@ public void onlyRunOne() {
 
 	@Test
 	public void runTwo() {
-		Result result= new JUnitCore().run(OnlyYesMaybeTwo.class);
+		Result result= new JUnitCore().run(OnlyYes.class);
 		assertEquals(2, result.getRunCount());
-		assertThat(testResult(OnlyYesMaybeTwo.class), isSuccessful());
+		assertThat(testResult(OnlyYes.class), isSuccessful());
 	}
 
 	@Test