The DLC does not have a release date yet.
Czech studio SCS Software, the developer of American Truck Simulator, has presented the first extensive gameplay of the upcoming Louisiana DLC. The video, about half an hour long, demonstrates a typical route in the Pelican State - from the north of Port Fourchon to the south of Lake Charles, near the border with Texas.
The developers noted that the gameplay shown includes unfinished assets and content, so some elements may change by the time the DLC is released.