Nintendo has just announced that they are continuing development of The Legend of Zelda: Breath of the Wild. They will be releasing the updates throughout 2017. The cost to download the upcoming content is $19.99 and will be available on the Nintendo Store on March 3rd alongside the release of the game. In addition to the upcoming content, you will also gain access to 3 in-game treasure chests. Read the below excerpt from Nintendo for more details.
Starting when the game launches on March 3, players will be able to purchase an Expansion Pass for $19.99, granting access to two new sets of downloadable content for the game when they become available later this year. Immediately upon pre-purchase or purchase of the Expansion Pass, three new treasure chests will appear in the game’s Great Plateau area. One of these treasure chests will contain a shirt with a Nintendo Switch logo that Link can wear during his adventure, exclusive to the Expansion Pass. The other two will deliver useful items.
Content Pack 1: The first content pack is scheduled to launch this summer, and will include the addition of a Cave of Trials challenge, a new hard mode and a new feature for the in-game map.
Content Pack 2: The second content pack will launch in Holiday 2017, and adds new challenges that will let players enjoy a new dungeon and a new original story.
The Expansion Pass will be available for both the Nintendo Switch and Wii U versions of the game and are identical. Content packs cannot be purchased individually.