--- ray/doc/notes/ReleaseNotes	2014/05/30 00:00:54	1.235
+++ ray/doc/notes/ReleaseNotes	2014/09/15 16:49:08	1.247
@@ -1807,7 +1807,7 @@ of KitWare and sponsored by NREL.  This includes a qt-
 driver for rvu, which is built in the new subdirectory src/qtrvu.
 
 =====================
-Version 4.2
+Version 4.2 (Release date 7/31/2014)
 
 Axel Jacobs added -cp and -palettes options to falsecolor.
 
@@ -1936,3 +1936,42 @@ by Rob Guglielmetti.
 Added header variables for NROWS, NCOLS and NCOMP to help standardize
 matrix files.  This functionality has been incorporated into
 rcollate, gendaymtx, and dctimestep.
+
+Created rmtxop utility to operate on multi-component matrices.  This
+facilitates some daylight matrix calculations, and provides a general
+tool for manipulating matrix data.
+
+****** COMPATIBILITY CHANGE ********
+Introduced new Hessian-based error control in irradiance caching (ambient)
+calculation.  Since the format of the stored ambient values is different,
+the old files will be rejected with an error message and must be removed.
+The programs may be compiled with the -DOLDAMB option if this is a problem.
+
+Added -p option to rcontrib to set function file parameters on a per-modifier
+basis to simplify bin evaluation.
+
+Created rfluxmtx program to compute flux transfer matrices from a sender
+surface to one or more receiver surfaces.  (Renamed the file klems_int.cal
+to klems_full.cal in the process.)
+
+Added "-c" option to getinfo to execute command on data segment.
+
+=====================
+Version 4.3
+
+Changed rmtxop so it writes out same type as lesser of inputs unless
+direction otherwise using -f? option.
+
+Changed order of oconv arguments in rfluxmtx so user can specify input
+octree using -i option at the end instead of (or in addition to) a
+list of scene files.
+
+Added support for argument expansion to rfluxmtx and bug fixes.
+
+Fixed bug in indirect hemisphere sampling for some corner cases.
+
+Added default specular lobe to BSDF interpolation.
+
+Set minimum number of shadow checks before direct optimization (4).
+
+(Above changes included in 4.2.1 patch release.)