Outer World's "Peril on Gorgon" DLC will be coming to Switch: https://gonintendo.com/stories/368535-the-outer-worlds-peril-on-gorgon-dlc-officially-confirmed-for-s
The publisher also states they are still working on a patch to address the Switch versions' graphical shortcomings:
The Nintendo Switch patch is still in the works!
— Private Division (@PrivateDivision) September 8, 2020