As per the information, Verizon sending a new software update to its locked devices. It comes with the software version N950USQU8DTI1 for Galaxy Note 8. Samsung has moved Galaxy Note 8 to a quarterly update from a monthly update schedule. So it could be a last monthly update from the carrier.
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To update the version on your device, you will need to have a minimum battery charge of 20%. You may be prompted to update when it’s available, otherwise, system updates can be done over a Wi-Fi connection or with the Software Upgrade Assistant.
To manually check for updates, navigate to Settings > System update. If your system is up-to-date, you don’t need to do anything further. Otherwise, tap Download and install to update your phone.