The Link and Zelda Amiibo figurines won’t be the only ones that are compatible with Hyrule Warriors. In a recent update to their Amiibo website, Nintendo have announced that the upcoming Sheik and Toon Link Amiibos will work with the game as well.
Just what functionality Toon Link and Sheik will bring to the game hasn’t been announced yet. (Regular Link and Zelda will both unlock weapons in the game.)
Additionally, Nintendo also confirmed last week that all of the Smash Bros. Amiibos will be compatible with Hyrule Warriors; although, outside of the four mentioned above, these Amiibos will only unlock materials or Rupees.