Ganon is back! The mighty ruler of darkness has been confirmed to at least be involved in the game’s story, as evidenced by text from the gameplay video taken from the Treehouse stream.
After finishing exploring a shrine, a Sheikah monk tells Link he dedicates his life to helping those who seek to stop Ganon, alongside the Goddess Hylia. He then gives Link a Spritual Orb for his efforts in completing the shrine. It is still not confirmed if Ganon is actually the main villain in the game, or if he will only be mentioned during the game. The text seems to imply that he is in fact the villain for the game, but there is no way for us to be exactly sure. We’ll have to wait and see if there is confirmation from Nintendo, or if we’ll have to wait until the game is released to find out.