https://wccftech.com/animal-crossing-new-horizons-patch-1-1-notes/

Animal Crossing New Horizons patch 1.1 is available now ahead of the game’s global release tomorrow and we’ve got you covered with its release notes.

The Nintendo of Japan took to Twitter to share the 1.1 patch notes, and as covered earlier this week, the patch packs support for the game’s first special event.  The 1.1 patch updates the game’s file size from 6.2GB to 6.4GB and weighs in at 253MB on the Nintendo Switch.