Samsung have released the latest security patches to fix the WPA2 KRACK vulnerability and also add a few improvements and bug fixes to their Oreo beta software.
The build number is showing as G950FXXU1AQI7 on the Samsung Mobile website and I have just downloaded the update on my phone to give it a try.
Transparency settings for notifications and new Always on Display clocks are some of the additional features being reported including stability improvements for the Samsung Launcher and Dex.
The update is 609.57MB in total. See below for some screenshots.