It was announced, and was to be deployed before the launch of Rush Hour. And the Steam client is now showing almost 100GB of download for this major update to Train Sim World 2, depending on the number of DLCs (we have them all). Everything goes there, roads like trains, the base game like extensions. Rather than upgrading its simulation from time to time, the developers preferred to work on a huge fix. If you are patient or looking for a good read under the duvet tonight, you can check out the changelog extendable right here. Numerous bug fixes, an evolving Unreal Engine, and general usability improvements. Good reading !