diff --git a/ChangeLog b/ChangeLog
index 3c3fdfe..95a5bbd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,7 @@
 	* example-cdc-gnu-linux/usb-cdc.c: Ditto.
 	* example-fs-bb48/usb-cdc.c: Ditto.
 	* example-fraucheky/main.c: Ditto.
+	* example-fraucheky/Makefile (USE_SYS): Add for debug.
 
 2017-11-13  NIIBE Yutaka  <gniibe@fsij.org>
 
diff --git a/NEWS b/NEWS
index 4cbe28a..2300f61 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,23 @@
 NEWS - Noteworthy changes
 
 
+* Major changes in Chopstx 1.6
+
+  Released 2017-11-XX
+
+** Fix cancellation
+In Chopstx 1.4 and 1.5, cancellation doesn't work for real MCU.  This
+is due to the change of chx_sched interface, introduced for GNU/Linux
+emulation.  This bug is fixed.
+
+** USB API changes
+INTR_REQ_USB is now defined by usb_lld.h.  Enumeration type of
+DEVICE_STATE now has USB_DEVICE_STATE_ prefix.
+
+** USB driver change
+USB suspend/resume is supported for STM32F103.
+
+
 * Major changes in Chopstx 1.5
 
   Released 2017-10-10
diff --git a/example-fraucheky/Makefile b/example-fraucheky/Makefile
index 07b5711..7458b5f 100644
--- a/example-fraucheky/Makefile
+++ b/example-fraucheky/Makefile
@@ -9,7 +9,7 @@ LDSCRIPT=
 
 CSRC = main.c
 CHIP=gnu-linux
-USE_SYS =
+USE_SYS = yes
 USE_USB = yes
 EMULATION=yes
 # USE_ADC = yes