Versions (Updates or Patches) are significant updates in Genshin Impact. Each version lasts 6 weeks (42 days) on average.
Versions are labeled through a sequence-based identifier versioning scheme which reflects change significance. Genshin Impact's version numbers follow the format of many other versioning sequences, incrementing the left-most number for major updates and the right-most number for bug fixes; for most 6-week version updates, the second number in the version tag is the one that is incremented. For very significant or large version updates, such as the introduction of a new primary region in Teyvat, the first number may be incremented instead.
The first patch in each version has the version number X.Y.0 and future patches (X.Y.1, X.Y.2, etc.) fix major problems with the game that require a client update through the Game Launcher or App Store.
Dear Traveler, the game servers will be down for maintenance at around XXm. After the maintenance, you will no longer be able to head to the island, so please plan your game progress to avoid missing out. For more details, please refer to the in-game announcement.