Based on an interview with Nintendo, it looks like there will be less larger dungeons. I would imagine since there are 6 provinces (Eldin, Lanayru, Faron, Hebra, Necluda, and Altun) on the map besides Hyrule, all of those areas will have significant meaning to the story. 6 dungeons would be less dungeons than usual. I hope it's not less than that.
There are fewer big dungeons in the new game, and an emphasis on Link having many smaller shrines to explore, spread around the map. Is that a design choice that goes back to the beginning of the project? Or is that a change you made when the decision was taken to make the game for two platforms, to reflect the battery life of the Switch when it's undocked? So the player can finish a shrine in a single handheld sitting?
It wasn't necessarily an original design point. At first, we were planning to include more large, labyrinth-style dungeons, the sort of things you'd expect in a Zelda title. But the reason we decided to include the smaller shrines—which isn't to say there aren't some larger dungeons in Breath of the Wild—was to strike a balance, between this extremely large (over)world that you're exploring, and these goals and objectives to explore within that. So by dotting these shrines around—a larger number of them, but with each smaller in size than the older-style dungeons—it helped bring up balance, and break up the huge world into smaller, explorable chunks.