--- ray/doc/notes/ReleaseNotes	2025/03/19 01:18:20	1.478
+++ ray/doc/notes/ReleaseNotes	2025/06/27 19:38:13	1.493
@@ -2672,9 +2672,11 @@ put out as many color channels as specified in any -cs
 
 Added ability of mgf2rad to convert spectral data at least
 for light, glow, plastic, and metal primitive types.  Need
-to use new '-s' option to get new output.
+to use new '-s' option to get new output.  Added support for
+new WGMDfunc type as well, which is considerably more flexible
+at supporting different spectral components.
 
-Added handling of spectral images to rcode2bmp script.
+Added handling of spectral pictures (HSR) to rcode2bmp script.
 
 Minor change to rcollate to allow explicit byte records to
 be any specified length without checks against header input.
@@ -2718,7 +2720,7 @@ Wrote rxpiece tool that will render pictures using til
 can handle different output formats and hyperspectral pictures.
 Only runs on a single machine, however -- no NFS locking on
 shared volumes.  Mainly a demonstration tool for RpictSimulManager
-C++ class, but may have its uses.
+C++ class, but later added to standard Rmakefile targets.
 
 Fixed a bug in BSDF sampling of sources pointed out by
 David Geisler-Moroder, which tended to overestimate specular
@@ -2740,7 +2742,7 @@ results are still reported in RGB.
 Added accurate conversion of hyperspectral pictures to ra_xyze.
 
 Added hyperspectral picture conversion to ra_tiff, with accurate
-color when targeting 16-bit/comp., LogLuv, and float utput,
+color when targeting 16-bit/comp., LogLuv, and float output,
 and the approximate method for 24-bit RGB.
 
 Taoning added genssky -L option to specify global and diffuse
@@ -2775,3 +2777,57 @@ This follows the request and recommendations of David 
 Removed limitation in rfluxmtx, which was disallowing distant
 and local receivers. Found this to be a perfectly valid approach
 for some annual daylighting scenarios.
+
+Wrote new pvsum tool to handle cases dctimestep can't, like
+spectral input pictures.  It also adds a -N option for multi-
+processing on Unix machines, which utilizes memory-mapped
+inputs for efficient i/o sharing.
+
+Made it so genBSDF can use spectral rendering for a
+more accurate photometric result.
+
+Changed default matrix representation to float rather than
+double, which uses less RAM and supports faster operations
+in general.  Build with compiler flag:
+	-DDTnativeDTrmx_native=DTdouble
+to get back higher precision representation.
+
+Taoning Wang updated genssky and gensdaymtx to provide illuminance
+calibration and accept EPW files directly as input.
+
+Added -e expr and -f file.cal options to all rendering tools, not
+just rcontrib/rxcontrib.  Feature request from Peter A-B.
+
+Fixed slight bias in indirect calculation caused by ambient
+collision detection, pointed out by Jon Sargent.  New code
+keeps track of rejected samples and sells them back to
+later calls to get something closer to a true Poisson
+sampling method.
+
+Altered rvu "origin" command to take shift amounts forward,
+right, and up rather than taking an explicit origin, which
+can be done easily enough with the "view" command.  Peter A-B
+requested (sort of).
+
+Added genglaze tool created by Taoning Wang to generate
+spectral glazing materials based on CGDB data and models.
+
+Fixed bug that caused inf and nan errors with -cw setting
+where longer wavelength was substantially less than limits
+of specified spectra.
+
+Created bsdfpeaks utility to identify and report full-width,
+half-maximum sizes of peaks in SIR and XML inputs.
+
+Changed default super-sampling in bsdf2ttree from 256 to 64,
+since there doesn't seem to be much benefit to the higher
+sampling rate for most BSDFs.
+
+Fixed problem with "mirror" primitive, which was not permitting
+indirect rays to transmit through alternate material type.
+Thanks to Jon Sargent for finding problem and help resolving it.
+
+Added experimental C++ based rxpiece tool to default installation
+in makeall/Rmakefile.
+
+Added rcomb -mt option to transpose concatenation matrix.