https://wccftech.com/animal-crossing-new-horizons-update/

Animal Crossing: New Horizons is going to receive its first update before the game officially launches worldwide.

The 1.1.0 update will be released one day before the game launches, on March 19th. The update will bring support for a special event that is going to be held in April. Those who own Animal Crossing: Pocket Camp will also receive special items for both the mobile game and the upcoming Switch game.