The first patch / update is already available for The Legend of Zelda : Breath of the Wild. First reported by Polygon, the first patch provides a “Downloadable Content” menu item to appear on the game’s front menu. The first patch and update is also available for the Wii U version. The Downloadable Content menu item provides access to the upcoming Expansion Pass announced earlier for The Legend of Zelda : Breath of the Wild.
Nintendo recently announced a Expansion Pass for The Legend of Zelda : Breath of the Wild. The Expansion pass includes a bonus featuring 3 new treasure chests. Along with the bonus two other DLC packs will be available, the first will be available sometime this summer. The 2nd DLC pack will get released sometime winter 2017.