I'm getting a 5.97GB update right now. Anyone know any details? I checked the "news and updates" subforum, but the last one they have listed is from 10/9. Thanks!
Its most likely related to the "Mastery" feature: https://forums.dovetailgames.com/threads/introducing-mastery-for-train-sim-world.18988/ Full Changelog will be probably posted a bit later