diff --git a/wp-includes/post-template.php b/wp-includes/post-template.php
index 427b0acf90..eb794fa025 100644
--- a/wp-includes/post-template.php
+++ b/wp-includes/post-template.php
@@ -1629,12 +1629,13 @@ function get_the_password_form( $post = 0 ) {
  * Whether currently in a page template.
  *
  * This template tag allows you to determine if you are in a page template.
- * You can optionally provide a template name and then the check will be
- * specific to that template.
+ * You can optionally provide a template name or array of template names
+ * and then the check will be specific to that template.
  *
  * @since 2.5.0
+ * @since 4.2.0 The `$template` parameter was changed to accept an array of page templates.
  *
- * @param string $template The specific template name if specific matching is required.
+ * @param string|array $template The specific template name or array of templates to match.
  * @return bool True on success, false on failure.
  */
 function is_page_template( $template = '' ) {
@@ -1649,6 +1650,14 @@ function is_page_template( $template = '' ) {
 	if ( $template == $page_template )
 		return true;
 
+	if ( is_array( $template ) ) {
+		if ( ( in_array( 'default', $template, true ) && ! $page_template )
+			|| in_array( $page_template, $template, true )
+		) {
+			return true;
+		}
+	}
+
 	if ( 'default' == $template && ! $page_template )
 		return true;
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7e25223918..3c536aa685 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31753';
+$wp_version = '4.2-alpha-31754';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.