Samsung SmartThings Hub 2018 and 2015 model firmware version 26.9 will be releasing to customers starting Thursday, June 27th. This release includes improvements to pairing process for some Zigbee devices and other minor 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/hub-firmware-release-notes-26-9/166632
for more information. The roll out may take a few days to reach all users; we will update the status page when the release is complete.