MadMod101

it says "// --- MAIN CONFIGURATION FILE ---" so yes, you found it

It's a series of updates they are doing particularly this month because of the release of the Battleye anti-cheat that cheaters are easily circumventing. I'd extremely recommend, for the rest of the month and into November, keep your game on 3351, when everything updates, or the previous version (I don't recall the version number). You can turn off automatic updates and revert updates when they happen to 3351 and continue playing as normal.
 
When mid-November rolls around, assuming the latest version is stable, I'd recommend updating to the newest version, so that you have any new content in your game and you can receive support for the new game version in these forums and most Discord's.