--- old/src/java.compiler/share/classes/javax/lang/model/SourceVersion.java	2017-12-11 22:32:47.930062197 -0800
+++ new/src/java.compiler/share/classes/javax/lang/model/SourceVersion.java	2017-12-11 22:32:47.586062182 -0800
@@ -159,7 +159,15 @@
      *
      * @since 10
      */
-     RELEASE_10;
+     RELEASE_10,
+
+    /**
+     * The version recognized by the Java Platform, Standard Edition
+     * 11.
+     *
+     * @since 11
+     */
+     RELEASE_11;
 
     // Note that when adding constants for newer releases, the
     // behavior of latest() and latestSupported() must be updated too.
@@ -170,7 +178,7 @@
      * @return the latest source version that can be modeled
      */
     public static SourceVersion latest() {
-        return RELEASE_10;
+        return RELEASE_11;
     }
 
     private static final SourceVersion latestSupported = getLatestSupported();
@@ -180,6 +188,8 @@
             String specVersion = System.getProperty("java.specification.version");
 
             switch (specVersion) {
+                case "11":
+                    return RELEASE_11;
                 case "10":
                     return RELEASE_10;
                 case "9":