Like what Axle said in his video, it'll probably end up being similar to Majora's Mask in that the length of the game will be shorter, but the plot line will be deeper, there will be more opportunities for character development, and hopefully a lot of different side quests where you can interact with NPCs and further the story along.
I was really excited when I heard that the game was going to be denser. Hopefully, it will take on a similar formula to the N64 games, which I miss greatly.