We might see some recently announced characters
Japanese video streaming site Niconico will be sharing some live footage of Hyrule Warriors tomorrow, in an official capacity that could show off new characters or new stages in the game.
If you’re interested, it’ll be streaming at 9PM Japan time, which is 8AM Eastern tomorrow. You can find the link to the stream here when it goes live. Since nothing has been shown off for Darunia and Princess Ruto yet, I hope we get to see them in action.