The Galaxy S8 seems to be happening other Samsung Galaxy models improved with the November 2018 security patch, which began a few hours ago from Germany – for version with the Exynos processor.
The biuld number of the increase has a password G950FXXU4CRK1, when solving it 12 Google's critical vulnerability and 14 loopholes in the Samsung operating system. According to Sammobile, the upgrade is not yet available through OTA (Over The Air) and is currently being carried out through Samsung Smart Switch. But the process of Over The Air will begin soon. According to the change log, it doesn't bring any other significant changes / improvements to the model, but the overall size is more than 400MB. However, this is expected for devices that don't support Google Project Treble, so they need it every time – updating more data for updates.
Remember that recently, the Galaxy S9, Galaxy Note 9 and Galaxy Note 8 were upgraded with security updates in October 2018, but the news was generally not good for their owners, because they had "seen" Android 9 Pie on their cellphones must wait until early 2019!