A firmware update for Samsung SmartThings Hub 2018 and 2015 models will release to customers starting Monday, July 15th. This release version 26.12 is a hotfix for version 26.9 that includes improvements Hue connectivity, Z-Wave firmware updates, and a few other minor bugs.
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/hub-firmware-release-notes-26-9/166632
for more information.