Index: doc/Announce2.4.1
===================================================================
diff -u -rdeebac4d148d6e1cca2aa6b3ea33ff28359f518d -r24542a2eef5724b7594c96a1f95d0402b8629083
--- doc/Announce2.4.1	(.../Announce2.4.1)	(revision deebac4d148d6e1cca2aa6b3ea33ff28359f518d)
+++ doc/Announce2.4.1	(.../Announce2.4.1)	(revision 24542a2eef5724b7594c96a1f95d0402b8629083)
@@ -17,6 +17,9 @@
     https://github.com/nm-wu/nsf/actions
     https://ci.appveyor.com/project/mrcalvin/nsf-2ylk0/history
 
+Hint: As for Tcl 8.5, NSF is only tested with (unreleased) Tcl 8.5
+revisions taken from `core-8-5-branch` at https://core.tcl-lang.org/tcl/.
+
 Selected changes worth mentioning:
 
 - Maintenance & bug fixes: