--- ray/doc/notes/ReleaseNotes	2008/03/11 02:21:46	1.146
+++ ray/doc/notes/ReleaseNotes	2009/02/09 16:41:28	1.155
@@ -1644,9 +1644,6 @@ The only caveat is that -n setting > 1 requires -PP ra
 
 Added -c option to rtcontrib to facilitate cumulative calculations.
 
-Added ability to incorporate LBNL Window 6 bidirectional scattering
-distribution function (BSDF) data in mkillum.
-
 ****** COMPATIBILITY CHANGE ********
 Fixed long-standing bug in source.cal, which caused it to produce
 reversed anisotropic photometric distributions due to the
@@ -1663,3 +1660,32 @@ Corporation in Boulder, CO, and directed by Zack Roger
 
 Added "planisphere" (stereographic) fisheye view type for traditional
 daylighting analysis.  Feature requested & explained by Axel Jacobs.
+
+Modified -c option to rtcontrib so it can take a number of input
+rays to average over, rather than only produce a single accumulated
+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.
+
+Improved sampling of circular sources (source, sphere, ring types) with
+quite a bit of help from David Geisler-Moroder.
+
+Added "rpict" and "rvu" variables to rad, and made these as well as
+the "oconv", "mkillum" and "pfilt" variables accept an alternate
+command path in each case.  Change suggested by Lars Grobe based
+on similar Radzilla (radz) facility by Carsten Bauer.
+
+Fixed rad -v N specification to use actual view name if one.