Samsung SmartThings Hub 2018 and 2015 model firmware version 25.32 will be releasing to customers starting May 20. This release includes improved Hub boot times and Z-Wave enhancements and bug fixes (including better control of older switches).
Your Hub will briefly go offline as it reboots and applies the update; most customers will experience less than one minute of downtime. Visit https://community.smartthings.com/t/hub-firmware-release-notes-25-32/
for more information. The roll out may take a few days to reach all customers; we will update the status page when the release is complete.