https://www.gematsu.com/2025/11/pokemon-pokopia-launches-march-5-2026
The physical edition will ship on a game-key card worldwide, as revealed by a new video about game-key cards (English, Japanese) released today by Nintendo.
I think this is the first big-ish Nintendo release to use a key-card.
Worse. You need to use the card to play the game, even though it’s just a key to unlock downloading the game. Worst of both worlds.