The latest significant update focused on stability and fixing long-standing exploits:
Dark Souls: Remastered on Switch includes the DLC on the cartridge/digital download by default. You do not need a separate unlocker NSP. The update file strictly patches the game engine, not adds new textures or areas. Dark Souls- Remastered Switch NSP UPDATE
: The official Nintendo Store page confirms that the Remaster includes the Artorias of the Abyss DLC by default . The latest significant update focused on stability and