As of now, the only information of the Switch 2 we have is knowledge of a brand new Mario Kart with a new art style to boot, and that the Switch 2 will be compatible with the majority of physical and digital Switch titles.
While we do not know what will be the exception, they did show on their site games like Super Mario Wonder, The Legend of Zelda: Breath of the Wild, Luigi’s Mansion 3, Xenoblade Chronicles 3 and Animal Crossing: New Horizons as games that will be playable.