--- ray/doc/notes/ReleaseNotes	2023/12/09 23:46:51	1.437
+++ ray/doc/notes/ReleaseNotes	2024/05/17 20:50:57	1.450
@@ -2643,9 +2643,8 @@ of them.
 
 Added spectral picture support to rcrop and radcompare.
 
-Added new utility, rmtxcomb, which is hard to type and hard to
-pronounce, and probably equally difficult to use.  Sort of a
-combination of rmtxop and pcomb, it works with all the inputs and
+Added new utility, rcomb, which is something like a combination
+of rmtxop and pcomb, it works with all the inputs and
 outputs that rmtxop handles, but allows for general expressions
 like those in pcomb for putting matrices together, working on
 an element at a time.  (No resizing of matrices or accessing
@@ -2659,3 +2658,40 @@ Added support for filtering hyperspectral images to pf
 
 Added support for 1- and 3-component float matrix i/o to
 pcomb to allow for better interoperability.
+
+Added support for -co+ option to rtpict, so it can directly
+produce hyperspectral images.
+
+Added new "specdata" and "specpict" primitives to support
+interpolated spectral data files and hyperspectral images
+as patterns.
+
+Added support for multispectal sampling in rsensor, which will
+put out as many color channels as specified in any -cs option
+(default is 3 for RGB).
+
+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.
+
+Added handling of spectral images to rcode2bmp script.
+
+Minor change to rcollate to allow explicit byte records to
+be any specified length without checks against header input.
+
+Added new hemisphere type to rfluxmtx, "h=cie" for CIE sky
+scanner positions.  These are 145 patches with identical
+row counts to Tregenza, but starting from a different
+azimuth and reversing row directions at adjacent altitudes.
+
+Added optimization for long argument lists and arrays in
+the calcomp routines used for rendering and in rcalc, etc.
+
+Added error estimate spreading to ambient super-sampling
+algorithm (-as) to improve performance especially in
+scenes with sharp cut-offs.
+
+Added -i option to gendaymtx to match -i option of gendaylit.
+Thanks to Yongqing for initial implementation.
+
+Changed rcrop so negative #rows or #cols counts back from end.