There were two leaked videos a couple days ago. Link wears a darker green hooded cloak on top of the outfit seen here, and there's a black horse with a black and red saddle. It looks like Zelda has a tawny horse with a gold and black saddle.
Also Dichen Lachman (Ms. Casey from Severance) is playing Impa, based on the video below.
At least from the costume perspective, I think they did a good job.