Samsung SmartThings Hub 2018 and 2015 model firmware version 0.35.04 will be released to customers starting Tuesday, February 16th, 2021. This release includes updates for improved Z-Wave Network performance and other bug fixes and stability improvements.
Your Hub will briefly go offline as it reboots and applies the update; most users will experience less than one minute of downtime. Visit https://community.smartthings.com/t/2018-2015-model-hub-firmware-release-notes-0-35-04/220491
for more information. We will update the status page once the release has been completed.