Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revision 10870)
+++ wp-includes/functions.php	(working copy)
@@ -66,6 +66,9 @@
 		case 'timestamp':
 			return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
 			break;
+		case 'timestampgmt':
+			return ( $gmt ) ? strtotime(gmdate("Y-m-d H:i:s")) : strtotime(gmdate("Y-m-d H:i:s")) + ( get_option( 'gmt_offset' ) * 3600 );
+			break; 
 	}
 }