Index: src/applications/harbormaster/controller/HarbormasterPlanViewController.php
===================================================================
--- src/applications/harbormaster/controller/HarbormasterPlanViewController.php
+++ src/applications/harbormaster/controller/HarbormasterPlanViewController.php
@@ -37,7 +37,7 @@
       ->setTransactions($xactions)
       ->setMarkupEngine($engine);
 
-    $title = pht("Plan %d", $id);
+    $title = pht("Plan %d: %s", $id, $plan->getName());
 
     $header = id(new PHUIHeaderView())
       ->setHeader($title)
Index: src/applications/harbormaster/controller/HarbormasterStepEditController.php
===================================================================
--- src/applications/harbormaster/controller/HarbormasterStepEditController.php
+++ src/applications/harbormaster/controller/HarbormasterStepEditController.php
@@ -108,6 +108,20 @@
             ->setValue($value)
             ->setOptions($options);
           break;
+        case BuildStepImplementation::SETTING_TYPE_BUILDABLE_TYPE:
+          $control = id(new AphrontFormCheckboxControl())
+            ->setLabel($this->getReadableName($name, $opt))
+            ->addCheckbox(
+              'commit',
+              'PhabricatorRepositoryCommit',
+              'Commits',
+              in_array('commit', $value))
+            ->addCheckbox(
+              'revision',
+              'DifferentialRevision',
+              'Differential Revisions',
+              in_array('revision', $value));
+          break;
         default:
           throw new Exception("Unable to render field with unknown type.");
       }
@@ -171,6 +185,16 @@
       case BuildStepImplementation::SETTING_TYPE_BOOLEAN:
         return $request->getBool($name);
         break;
+      case BuildStepImplementation::SETTING_TYPE_BUILDABLE_TYPE:
+        $values = array();
+        if ($request->getStr('commit') !== null) {
+          $values[] = 'commit';
+        }
+        if ($request->getStr('revision') !== null) {
+          $values[] = 'revision';
+        }
+        return $values;
+        break;
       default:
         throw new Exception("Unsupported setting type '".$type."'.");
     }
Index: src/applications/harbormaster/step/BuildStepImplementation.php
===================================================================
--- src/applications/harbormaster/step/BuildStepImplementation.php
+++ src/applications/harbormaster/step/BuildStepImplementation.php
@@ -8,6 +8,7 @@
   const SETTING_TYPE_INTEGER = 'integer';
   const SETTING_TYPE_BOOLEAN = 'boolean';
   const SETTING_TYPE_ARTIFACT = 'artifact';
+  const SETTING_TYPE_BUILDABLE_TYPE = 'buildabletype';
 
   public static function getImplementations() {
     $symbols = id(new PhutilSymbolLoader())
Index: src/applications/harbormaster/step/PublishFragmentBuildStepImplementation.php
===================================================================
--- src/applications/harbormaster/step/PublishFragmentBuildStepImplementation.php
+++ src/applications/harbormaster/step/PublishFragmentBuildStepImplementation.php
@@ -14,8 +14,24 @@
   public function getDescription() {
     $settings = $this->getSettings();
 
+    $values = array();
+    $publish = $settings['publish_on'];
+    $publish_text = '';
+    if (in_array("commit", $publish)) {
+      $values[] = pht('commits');
+    }
+    if (in_array("revision", $publish)) {
+      $values[] = pht('differential revisions');
+    }
+    if (count($values) === 0) {
+      $publish_text = pht('Never');
+    } else {
+      $publish_text = pht('For %s,', implode(' and ', $values));
+    }
+
     return pht(
-      'Publish file artifact \'%s\' to the fragment path \'%s\'.',
+      '%s publish file artifact \'%s\' to the fragment path \'%s\'.',
+      $publish_text,
       $settings['artifact'],
       $settings['path']);
   }
@@ -27,6 +43,21 @@
     $settings = $this->getSettings();
     $variables = $build_target->getVariables();
 
+    // Check if we should publish for this buildable.
+    $buildable = $build->getBuildable();
+    $object = $buildable->getBuildableObject();
+    if ($object instanceof PhabricatorRepositoryCommit) {
+      if (!in_array("commit", $settings["publish_on"])) {
+        return;
+      }
+    } elseif ($object instanceof DifferentialDiff) {
+      if (!in_array("revision", $settings["publish_on"])) {
+        return;
+      }
+    } else {
+      throw new Exception("Unknown buildable type!");
+    }
+
     $path = $this->mergeVariables(
       'vsprintf',
       $settings['path'],
@@ -85,7 +116,12 @@
         'description' =>
           'The file artifact that will be published to Phragment.',
         'type' => BuildStepImplementation::SETTING_TYPE_ARTIFACT,
-        'artifact_type' => HarbormasterBuildArtifact::TYPE_FILE));
+        'artifact_type' => HarbormasterBuildArtifact::TYPE_FILE),
+      'publish_on' => array(
+        'name' => 'Publish On',
+        'description' =>
+          'The types of buildables that this step should activate for.',
+        'type' => BuildStepImplementation::SETTING_TYPE_BUILDABLE_TYPE));
   }
 
 }