Nintendo has confirmed that games released in its Switch 2 Edition format are compatible with the original Nintendo Switch console, according to publisher Marvelous. The Switch 2 Edition is a special game card that includes both the base game and an upgrade pack, which provides improvements over the original Switch edition.
Games containing the Switch 2 Edition will automatically launch on either console, eliminating the need for separate downloads or upgrades. If true, this feature would mirror Xbox’s Smart Delivery discs, allowing players to enjoy their games on two generations of platforms without any compatibility issues.
The announcement follows Nintendo’s earlier reveal of six games with Switch 2 Editions, including The Legend of Zelda and Kirby titles. These improved versions will include enhanced visuals or exclusive features.
While Nintendo has not yet commented on the matter, this development suggests a more streamlined gaming experience for its users, especially those who have already invested in the original Switch console.
Source: https://www.videogameschronicle.com/news/nintendo-switch-2-edition-games-are-cross-compatible-with-switch-1-publisher-claims