I don't think they'll do so again if Majora's Mask is anything to go by as far as asset reusing sequels go. Plus, BotW started out as a Wii U game. This next game will be made from the bottom up for Switch.
Hmm, I feel like some of the early replies here are extremely pessimistic and see Nintendo as trying to get in on some trend and make things even bigger.
I think the sequel or prequel or whatever we get using the same engine will be a smaller game. I don't know how much smaller, but it will be...