diff --git a/wp-admin/includes/class-wp-upgrader.php b/wp-admin/includes/class-wp-upgrader.php
index 6db77af5e1..8fb58d5266 100644
--- a/wp-admin/includes/class-wp-upgrader.php
+++ b/wp-admin/includes/class-wp-upgrader.php
@@ -1974,18 +1974,21 @@ class WP_Automatic_Updater {
 		if ( ! $this->should_update( $type, $item, $context ) )
 			return false;
 
+		$upgrader_item = $item;
 		switch ( $type ) {
 			case 'core':
 				$skin->feedback( __( 'Updating to WordPress %s' ), $item->version );
 				$item_name = sprintf( __( 'WordPress %s' ), $item->version );
 				break;
 			case 'theme':
-				$theme = wp_get_theme( $item );
+				$upgrader_item = $item->theme;
+				$theme = wp_get_theme( $upgrader_item );
 				$item_name = $theme->Get( 'Name' );
 				$skin->feedback( __( 'Updating theme: %s' ), $item_name );
 				break;
 			case 'plugin':
-				$plugin_data = get_plugin_data( $context . '/' . $item );
+				$upgrader_item = $item->plugin;
+				$plugin_data = get_plugin_data( $context . '/' . $upgrader_item );
 				$item_name = $plugin_data['Name'];
 				$skin->feedback( __( 'Updating plugin: %s' ), $item_name );
 				break;
@@ -1997,7 +2000,7 @@ class WP_Automatic_Updater {
 		}
 
 		// Boom, This sites about to get a whole new splash of paint!
-		$upgrade_result = $upgrader->upgrade( $item, array(
+		$upgrade_result = $upgrader->upgrade( $upgrader_item, array(
 			'clear_update_cache' => false,
 			'pre_check_md5'      => false, /* always use partial builds if possible for core updates */
 			'attempt_rollback'   => true, /* only available for core updates */
@@ -2071,7 +2074,7 @@ class WP_Automatic_Updater {
 		wp_update_plugins(); // Check for Plugin updates
 		$plugin_updates = get_site_transient( 'update_plugins' );
 		if ( $plugin_updates && !empty( $plugin_updates->response ) ) {
-			foreach ( array_keys( $plugin_updates->response ) as $plugin ) {
+			foreach ( $plugin_updates->response as $plugin ) {
 				$this->update( 'plugin', $plugin );
 			}
 			// Force refresh of plugin update information
@@ -2082,8 +2085,8 @@ class WP_Automatic_Updater {
 		wp_update_themes();  // Check for Theme updates
 		$theme_updates = get_site_transient( 'update_themes' );
 		if ( $theme_updates && !empty( $theme_updates->response ) ) {
-			foreach ( array_keys( $theme_updates->response ) as $theme ) {
-				$this->update( 'theme', $theme );
+			foreach ( $theme_updates->response as $theme ) {
+				$this->update( 'theme', (object) $theme );
 			}
 			// Force refresh of theme update information
 			wp_clean_themes_cache();
@@ -2098,8 +2101,21 @@ class WP_Automatic_Updater {
 
 		// Clean up, and check for any pending translations
 		// (Core_Upgrader checks for core updates)
-		wp_update_themes();  // Check for Theme updates
-		wp_update_plugins(); // Check for Plugin updates
+		$theme_stats = array();
+		if ( isset( $this->update_results['theme'] ) ) {
+			foreach ( $this->update_results['theme'] as $upgrade ) {
+				$theme_stats[ $upgrade->item->theme ] = ( true === $upgrade->result );
+			}
+		}
+		wp_update_themes( $theme_stats );  // Check for Theme updates
+
+		$plugin_stats = array();
+		if ( isset( $this->update_results['plugin'] ) ) {
+			foreach ( $this->update_results['plugin'] as $upgrade ) {
+				$plugin_stats[ $upgrade->item->plugin ] = ( true === $upgrade->result );
+			}
+		}
+		wp_update_plugins( $plugin_stats ); // Check for Plugin updates
 
 		// Finally, Process any new translations
 		$language_updates = wp_get_translation_updates();
diff --git a/wp-includes/update.php b/wp-includes/update.php
index fc891a5fb2..1948a741a3 100644
--- a/wp-includes/update.php
+++ b/wp-includes/update.php
@@ -166,9 +166,10 @@ function wp_version_check( $extra_stats = array(), $force_check = false ) {
  * @since 2.3.0
  * @uses $wp_version Used to notify the WordPress version.
  *
+ * @param array $extra_stats Extra statistics to report to the WordPress.org API.
  * @return mixed Returns null if update is unsupported. Returns false if check is too soon.
  */
-function wp_update_plugins() {
+function wp_update_plugins( $extra_stats = array() ) {
 	include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
 
 	if ( defined('WP_INSTALLING') )
@@ -207,7 +208,7 @@ function wp_update_plugins() {
 
 	$time_not_changed = isset( $current->last_checked ) && $timeout > ( time() - $current->last_checked );
 
-	if ( $time_not_changed ) {
+	if ( $time_not_changed && ! $extra_stats ) {
 		$plugin_changed = false;
 		foreach ( $plugins as $file => $p ) {
 			$new_option->checked[ $file ] = $p['Version'];
@@ -256,6 +257,10 @@ function wp_update_plugins() {
 		'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
 	);
 
+	if ( $plugin_update_stats ) {
+		$options['body']['update_stats'] = json_encode( $extra_stats );
+	}
+
 	$url = $http_url = 'http://api.wordpress.org/plugins/update-check/1.1/';
 	if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
 		$url = set_url_scheme( $url, 'https' );
@@ -296,9 +301,10 @@ function wp_update_plugins() {
  * @since 2.7.0
  * @uses $wp_version Used to notify the WordPress version.
  *
+ * @param array $extra_stats Extra statistics to report to the WordPress.org API.
  * @return mixed Returns null if update is unsupported. Returns false if check is too soon.
  */
-function wp_update_themes() {
+function wp_update_themes( $extra_stats = array() ) {
 	include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
 
 	if ( defined( 'WP_INSTALLING' ) )
@@ -348,7 +354,7 @@ function wp_update_themes() {
 
 	$time_not_changed = isset( $last_update->last_checked ) && $timeout > ( time() - $last_update->last_checked );
 
-	if ( $time_not_changed ) {
+	if ( $time_not_changed && ! $extra_stats ) {
 		$theme_changed = false;
 		foreach ( $checked as $slug => $v ) {
 			if ( !isset( $last_update->checked[ $slug ] ) || strval($last_update->checked[ $slug ]) !== strval($v) )
@@ -395,6 +401,10 @@ function wp_update_themes() {
 		'user-agent'	=> 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
 	);
 
+	if ( $theme_update_stats ) {
+		$options['body']['update_stats'] = json_encode( $extra_stats );
+	}
+
 	$url = $http_url = 'http://api.wordpress.org/themes/update-check/1.1/';
 	if ( $ssl = wp_http_supports( array( 'ssl' ) ) )
 		$url = set_url_scheme( $url, 'https' );