Index: exceptions.java
===================================================================
--- exceptions.java	(revision 2804)
+++ exceptions.java	(working copy)
@@ -213,6 +213,9 @@
 
         buildClass(dict, "DeprecationWarning", "Warning", "empty__init__",
                 "Base class for warnings about deprecated features.");
+        
+        buildClass(dict, "PendingDeprecationWarning", "Warning", "empty__init__",
+                "Base class for warnings about features which will be deprecated in the future.");
 
         buildClass(dict, "SyntaxWarning", "Warning", "empty__init__",
                 "Base class for warnings about dubious syntax.");
@@ -222,6 +225,9 @@
 
         buildClass(dict, "OverflowWarning", "Warning", "empty__init__",
                 "Base class for warnings about numeric overflow.");
+        
+        buildClass(dict, "FutureWarning", "Warning", "empty__init__",
+                "Base class for warnings about constructs that will change semantically in the future.");
 
         ts.frame = ts.frame.f_back;
     }
Index: Py.java
===================================================================
--- Py.java	(revision 2804)
+++ Py.java	(working copy)
@@ -268,6 +268,11 @@
     public static void DeprecationWarning(String message) {
         warning(DeprecationWarning, message);
     }
+    
+    public static PyObject PendingDeprecationWarning;
+    public static void PendingDeprecationWarning(String message) {
+        warning( PendingDeprecationWarning, message);
+    }
 
     public static PyObject SyntaxWarning;
     public static void SyntaxWarning(String message) {
@@ -283,6 +288,11 @@
     public static void RuntimeWarning(String message) {
         warning(RuntimeWarning, message);
     }
+    
+    public static PyObject FutureWarning;
+    public static void FutureWarning(String message) {
+        warning(FutureWarning, message);
+    }
 
     private static PyObject warnings_mod;
     private static PyObject importWarnings() {
@@ -607,9 +617,11 @@
         Warning             = initExc("Warning", exc, dict);
         UserWarning         = initExc("UserWarning", exc, dict);
         DeprecationWarning  = initExc("DeprecationWarning", exc, dict);
+        PendingDeprecationWarning      = initExc("PendingDeprecationWarning", exc, dict);
         SyntaxWarning       = initExc("SyntaxWarning", exc, dict);
         OverflowWarning     = initExc("OverflowWarning", exc, dict);
         RuntimeWarning      = initExc("RuntimeWarning", exc, dict);
+        FutureWarning      = initExc("FutureWarning", exc, dict);        
     }
 
     public static PySystemState defaultSystemState;