Hello,
I updated 2.348 to 2.361 with System->Check Update function.
On reboot, i lost my HDMI touch screen (Waveshare 7")
I looked at \boot\config.txt : It has been changed.
Before update
[i]initramfs volumio.initrd
gpu_mem=16
max_usb_current=1
dtparam=audio=on
audio_pwm_mode=2
dtparam=i2c_arm=on
disable_splash=1
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0
hdmi_drive=1
Volumio i2s setting below: do not alter
dtoverlay=iqaudio-dacplus,unmute_amp
[/i]
After update:
[i]initramfs volumio.initrd
gpu_mem=16
max_usb_current=1
dtparam=audio=on
]audio_pwm_mode=2
dtparam=i2c_arm=on
disable_splash=1
hdmi_force_hotplug=1
Volumio i2s setting below: do not alter
dtoverlay=iqaudio-dacplus,unmute_amp
Volumio i2s setting below: do not alter
dtoverlay=iqaudio-dacplus,unmute_amp
[/i]
So I added
hdmi_group=2
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0
hdmi_drive=1
and deleted 2nd entry of
Volumio i2s setting below: do not alter
dtoverlay=iqaudio-dacplus,unmute_amp
After reboot it worked 
…
Regards