--- ray/doc/notes/ReleaseNotes	2025/02/04 19:11:49	1.476
+++ ray/doc/notes/ReleaseNotes	2025/06/04 20:32:24	1.491
@@ -2764,3 +2764,65 @@ a bit more difficult to adjust.
 
 Added rad -N option to rholo call for multiprocessing when
 mkillum and/or mkpmap are involved in octree prep.
+
+Added ability of gendaymtx to read EPW as well as WEA files.
+When EPW input is provided, the 3-hour average dew point is
+used to compute a more accurate precipitable water content
+value.  It currently does not use these data directly from
+the EPW input, relying instead on a dew-point-to-W calculation.
+This follows the request and recommendations of David G-M.
+
+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.