--- ray/doc/notes/ReleaseNotes	2008/04/30 21:48:02	1.149
+++ ray/doc/notes/ReleaseNotes	2008/11/21 01:30:16	1.152
@@ -1667,3 +1667,15 @@ record (which can now be done with -c 0).
 
 =====================
 Version 4.0
+
+Added -n option to rvu to provide parallel rendering.
+
+****** COMPATIBILITY CHANGE ********
+Changed ".pic" extension to ".hdr" in all sources and documentation
+to improve interoperability with other software, since this has become
+the de facto extension for Radiance RGBE and XYZE pictures.  Since file
+extensions were never more than a convention in Radiance, this does not
+affect operation, but may require the update of scripts, etc. written
+by others that assume the ".pic" suffix for Radiance output.
+
+Added -N option to objview to support multiprocessing.