diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index eae5e70b65..842b76a8ea 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -545,6 +545,7 @@ phutil_register_library_map(array(
     'DifferentialRevisionRelationshipSource' => 'applications/search/relationship/DifferentialRevisionRelationshipSource.php',
     'DifferentialRevisionRepositoryHeraldField' => 'applications/differential/herald/DifferentialRevisionRepositoryHeraldField.php',
     'DifferentialRevisionRepositoryProjectsHeraldField' => 'applications/differential/herald/DifferentialRevisionRepositoryProjectsHeraldField.php',
+    'DifferentialRevisionRepositoryTransaction' => 'applications/differential/xaction/DifferentialRevisionRepositoryTransaction.php',
     'DifferentialRevisionRequiredActionResultBucket' => 'applications/differential/query/DifferentialRevisionRequiredActionResultBucket.php',
     'DifferentialRevisionResultBucket' => 'applications/differential/query/DifferentialRevisionResultBucket.php',
     'DifferentialRevisionReviewersHeraldField' => 'applications/differential/herald/DifferentialRevisionReviewersHeraldField.php',
@@ -552,6 +553,7 @@ phutil_register_library_map(array(
     'DifferentialRevisionSearchEngine' => 'applications/differential/query/DifferentialRevisionSearchEngine.php',
     'DifferentialRevisionStatus' => 'applications/differential/constants/DifferentialRevisionStatus.php',
     'DifferentialRevisionSummaryHeraldField' => 'applications/differential/herald/DifferentialRevisionSummaryHeraldField.php',
+    'DifferentialRevisionSummaryTransaction' => 'applications/differential/xaction/DifferentialRevisionSummaryTransaction.php',
     'DifferentialRevisionTitleHeraldField' => 'applications/differential/herald/DifferentialRevisionTitleHeraldField.php',
     'DifferentialRevisionTitleTransaction' => 'applications/differential/xaction/DifferentialRevisionTitleTransaction.php',
     'DifferentialRevisionTransactionType' => 'applications/differential/xaction/DifferentialRevisionTransactionType.php',
@@ -5195,6 +5197,7 @@ phutil_register_library_map(array(
     'DifferentialRevisionRelationshipSource' => 'PhabricatorObjectRelationshipSource',
     'DifferentialRevisionRepositoryHeraldField' => 'DifferentialRevisionHeraldField',
     'DifferentialRevisionRepositoryProjectsHeraldField' => 'DifferentialRevisionHeraldField',
+    'DifferentialRevisionRepositoryTransaction' => 'DifferentialRevisionTransactionType',
     'DifferentialRevisionRequiredActionResultBucket' => 'DifferentialRevisionResultBucket',
     'DifferentialRevisionResultBucket' => 'PhabricatorSearchResultBucket',
     'DifferentialRevisionReviewersHeraldField' => 'DifferentialRevisionHeraldField',
@@ -5202,6 +5205,7 @@ phutil_register_library_map(array(
     'DifferentialRevisionSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'DifferentialRevisionStatus' => 'Phobject',
     'DifferentialRevisionSummaryHeraldField' => 'DifferentialRevisionHeraldField',
+    'DifferentialRevisionSummaryTransaction' => 'DifferentialRevisionTransactionType',
     'DifferentialRevisionTitleHeraldField' => 'DifferentialRevisionHeraldField',
     'DifferentialRevisionTitleTransaction' => 'DifferentialRevisionTransactionType',
     'DifferentialRevisionTransactionType' => 'PhabricatorModularTransactionType',
diff --git a/src/applications/differential/editor/DifferentialRevisionEditEngine.php b/src/applications/differential/editor/DifferentialRevisionEditEngine.php
index 9bd986c33d..c9627a50b0 100644
--- a/src/applications/differential/editor/DifferentialRevisionEditEngine.php
+++ b/src/applications/differential/editor/DifferentialRevisionEditEngine.php
@@ -64,12 +64,32 @@ final class DifferentialRevisionEditEngine
       id(new PhabricatorTextEditField())
         ->setKey('title')
         ->setLabel(pht('Title'))
+        ->setIsRequired(true)
         ->setTransactionType(
           DifferentialRevisionTitleTransaction::TRANSACTIONTYPE)
         ->setDescription(pht('The title of the revision.'))
         ->setConduitDescription(pht('Retitle the revision.'))
         ->setConduitTypeDescription(pht('New revision title.'))
         ->setValue($object->getTitle()),
+      id(new PhabricatorRemarkupEditField())
+        ->setKey('summary')
+        ->setLabel(pht('Summary'))
+        ->setTransactionType(
+          DifferentialRevisionSummaryTransaction::TRANSACTIONTYPE)
+        ->setDescription(pht('The summary of the revision.'))
+        ->setConduitDescription(pht('Change the revision summary.'))
+        ->setConduitTypeDescription(pht('New revision summary.'))
+        ->setValue($object->getSummary()),
+      id(new PhabricatorDatasourceEditField())
+        ->setKey('repositoryPHID')
+        ->setLabel(pht('Repository'))
+        ->setDatasource(new DiffusionRepositoryDatasource())
+        ->setTransactionType(
+          DifferentialRevisionRepositoryTransaction::TRANSACTIONTYPE)
+        ->setDescription(pht('The repository the revision belongs to.'))
+        ->setConduitDescription(pht('Change the repository for this revision.'))
+        ->setConduitTypeDescription(pht('New repository.'))
+        ->setSingleValue($object->getRepositoryPHID()),
     );
   }
 
diff --git a/src/applications/differential/xaction/DifferentialRevisionRepositoryTransaction.php b/src/applications/differential/xaction/DifferentialRevisionRepositoryTransaction.php
new file mode 100644
index 0000000000..63c7f2c32d
--- /dev/null
+++ b/src/applications/differential/xaction/DifferentialRevisionRepositoryTransaction.php
@@ -0,0 +1,95 @@
+<?php
+
+final class DifferentialRevisionRepositoryTransaction
+  extends DifferentialRevisionTransactionType {
+
+  const TRANSACTIONTYPE = 'differential.revision.repository';
+
+  public function generateOldValue($object) {
+    return $object->getRepositoryPHID();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setRepositoryPHID($value);
+  }
+
+  public function getTitle() {
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+    if ($old && $new) {
+      return pht(
+        '%s changed the repository for this revision from %s to %s.',
+        $this->renderAuthor(),
+        $this->renderHandle($old),
+        $this->renderHandle($new));
+    } else if ($new) {
+      return pht(
+        '%s set the repository for this revision to %s.',
+        $this->renderAuthor(),
+        $this->renderHandle($new));
+    } else {
+      return pht(
+        '%s removed %s as the repository for this revision.',
+        $this->renderAuthor(),
+        $this->renderHandle($old));
+    }
+  }
+
+  public function getTitleForFeed() {
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+    if ($old && $new) {
+      return pht(
+        '%s changed the repository for %s from %s to %s.',
+        $this->renderAuthor(),
+        $this->renderObject(),
+        $this->renderHandle($old),
+        $this->renderHandle($new));
+    } else if ($new) {
+      return pht(
+        '%s set the repository for %s to %s.',
+        $this->renderAuthor(),
+        $this->renderObject(),
+        $this->renderHandle($new));
+    } else {
+      return pht(
+        '%s removed %s as the repository for %s.',
+        $this->renderAuthor(),
+        $this->renderHandle($old),
+        $this->renderObject());
+    }
+  }
+
+  public function validateTransactions($object, array $xactions) {
+    $actor = $this->getActor();
+
+    $errors = array();
+
+    $old_value = $object->getRepositoryPHID();
+    foreach ($xactions as $xaction) {
+      $new_value = $xaction->getNewValue();
+      if (!$new_value) {
+        continue;
+      }
+
+      if ($new_value == $old_value) {
+        continue;
+      }
+
+      $repository = id(new PhabricatorRepositoryQuery())
+        ->setViewer($actor)
+        ->withPHIDs(array($new_value))
+        ->executeOne();
+      if (!$repository) {
+        $errors[] = $this->newInvalidError(
+          pht(
+            'Repository "%s" is not a valid repository, or you do not have '.
+            'permission to view it.'),
+          $xaction);
+      }
+    }
+
+    return $errors;
+  }
+
+}
diff --git a/src/applications/differential/xaction/DifferentialRevisionSummaryTransaction.php b/src/applications/differential/xaction/DifferentialRevisionSummaryTransaction.php
new file mode 100644
index 0000000000..0ad6ba0971
--- /dev/null
+++ b/src/applications/differential/xaction/DifferentialRevisionSummaryTransaction.php
@@ -0,0 +1,56 @@
+<?php
+
+final class DifferentialRevisionSummaryTransaction
+  extends DifferentialRevisionTransactionType {
+
+  const TRANSACTIONTYPE = 'differential.revision.summary';
+
+  public function generateOldValue($object) {
+    return $object->getSummary();
+  }
+
+  public function applyInternalEffects($object, $value) {
+    $object->setSummary($value);
+  }
+
+  public function getTitle() {
+    return pht(
+      '%s edited the summary of this revision.',
+      $this->renderAuthor());
+  }
+
+  public function getTitleForFeed() {
+    return pht(
+      '%s updated the summary of %s.',
+      $this->renderAuthor(),
+      $this->renderObject());
+  }
+
+  public function hasChangeDetailView() {
+    return true;
+  }
+
+  public function getMailDiffSectionHeader() {
+    return pht('CHANGES TO REVISION SUMMARY');
+  }
+
+  public function newChangeDetailView() {
+    $viewer = $this->getViewer();
+
+    return id(new PhabricatorApplicationTransactionTextDiffDetailView())
+      ->setViewer($viewer)
+      ->setOldText($this->getOldValue())
+      ->setNewText($this->getNewValue());
+  }
+
+  public function newRemarkupChanges() {
+    $changes = array();
+
+    $changes[] = $this->newRemarkupChange()
+      ->setOldValue($this->getOldValue())
+      ->setNewValue($this->getNewValue());
+
+    return $changes;
+  }
+
+}