The new update arrives as version N950USQU3CRD7. The users, who are already on Android 8.0 Oreo getting a small update with April security patch and bug fixes. The update size for those users is 344.88MB.
The update includes 8.0 Oreo, April patch, and bug fixes. The size of update is 1364.62MB.
According to the carrier, the OTA update is rolled out in phases, it’ll likely be a few days before you receive it on your Galaxy Note 8.