--- a/src/hotspot/share/classfile/classFileParser.cpp	Tue Dec 11 15:09:15 2018 +0000
+++ b/src/hotspot/share/classfile/classFileParser.cpp	Tue Dec 11 10:29:08 2018 -0500
@@ -5733,7 +5733,8 @@
         ik->major_version() != JAVA_MIN_SUPPORTED_VERSION &&
         log_is_enabled(Info, class, preview)) {
       ResourceMark rm;
-      log_info(class, preview)("Loading preview feature type %s", ik->external_name());
+      log_info(class, preview)("Loading class %s that depends on preview features (class file version %d.65535)",
+                               ik->external_name(), ik->major_version());
     }
 
     if (log_is_enabled(Debug, class, resolve))  {