Please update as soon as you can.
You have approximately a month to update without issues.
Some bug fixes and reporting enhancements.
Windows Compiled Sentinel can be found at:
https://github.com/ajkagy/sentinel/releases/tag/v1.1
https://github.com/vivocoin/vivo/releases/download/v0.12.1.17/vivocore-0.12.17-win64-setup.exe
does not include vivod.exe. Most people don't use it so works for most.
https://github.com/vivocoin/vivo/releases/download/v0.12.1.17/vivocore-0.12.17-win64-setupa.exe
includes vivod.exe and will work for anyone.
Ubuntu masternode install and update script can be found at
https://github.com/coolblock/vpsVivo