--- a/CHANGES	Sat May 15 01:00:52 2021 +0000
+++ b/CHANGES	Sat May 15 02:31:44 2021 +0000
@@ -5,6 +5,14 @@
   rvf-dump is an original TCS211 command, whereas pwr-key and phone-on are
   FreeCalypso Tourmaline additions.
 
+* Added support for FC Tourmaline battery simulation (BSIM) mode:
+
+  + fc-fsio write-bsim-config command writes the /etc/batterysim file that
+    enables and configures BSIM mode.
+
+  + fc-tmsh bsim family of commands send ETM_BSIM command packets to the
+    target, driving simulated battery charging and discharging events.
+
 Changes from fc-host-tools-r14 to fc-host-tools-r15:
 
 * New fc-simint host program and its associated simagent target back end work