--- ray/doc/notes/ReleaseNotes	2018/09/01 16:42:39	1.325
+++ ray/doc/notes/ReleaseNotes	2019/06/18 00:00:35	1.337
@@ -2157,7 +2157,7 @@ Added bsdfview tool analogous to objview but for BSDF 
 which calls bsdf2rad then rad with a few useful default views.
 
 =========================
-Version 5.2
+Version 5.2 (Release October 8, 2018)
 
 Created psketch program to apply non-photorealistic rendering to selected
 objects, identified by modifier name(s).
@@ -2235,3 +2235,34 @@ out by Rob Shakespeare.
 
 Updates to evalglare and gendaylit from Jan Wienold, including new
 colored sky option.
+
+=========================
+Version 5.3
+
+Created radcompare program to compare Radiance tool output to reference outputs
+during unit-testing.
+
+Fixed issue reading very large files (> 2 GBytes) in rcollate.
+
+Made picking function in rvu ignore transparent and void surfaces.
+
+Added -orRxX options to rtrace to enable output of mirrored and unmirrored
+contributions and distances to enable new types of reprojections.  This also
+cleaned up and unified handling of effective ray lengths throughout code.
+
+Bug fixes from Jan Wienold for evalglare.
+
+Changed indexed (numbered) output from dctimestep to start from 0 rather
+than 1, to make it more consistent with expected input naming.
+
+Increased default sampling in bsdf2klems (-n option) to 1024.
+
+Fixed an issue noticed by David G-M that was causing genBSDF to bias
+isotropic tensor tree samples resulting in subsequent failure of
+peak extraction with "aBSDF" type.
+
+Introduced max() and min() functions to .cal library.
+
+Added random incident patch sampling to bsdf2klems to improve accuracy
+with scattering interpolation representation input (e.g., from
+pabopto2bsdf).  The other input types already sampled incident patch area.