In the keyword Pikmin 4 Switch NSP XCI -Update- , the most important term is -Update- . This refers to (or later, if a v1.1.0 is released).
If you own the game legally and simply want the latest version:
Pikmin 4, the latest installment in the beloved Pikmin series, has been making waves among Nintendo Switch enthusiasts. As a fan of the series or a newcomer looking to explore the world of Pikmin, you're likely on the hunt for information on how to access the game, especially if you're interested in the NSP (Nintendo Switch Package) or XCI (a file format used for Switch game backups) versions, and updates from the eShop. This comprehensive guide aims to cover all bases, from the game itself to the various ways you can enjoy it on your Nintendo Switch.