You will need to pay for an upgrade DLC if they support it, for higher res and HDR support
Discussion
Makes sense, thanks
Nintendo says... "If you already have the original Nintendo Switch game—as either a physical or digital version—you can upgrade to the Nintendo Switch 2 Edition by purchasing the game's upgrade pack from Nintendo eShop, My Nintendo Store, or retailers."
Hopefully, most of the game devs will do this 🤞