https://wccftech.com/zelda-breath-of-the-wild-sequel-dlc-ideas/

Zelda Breath of the Wild is the first entry in the series that is getting a direct sequel set in the same Hyrule as its predecessor. According to series’ producer Eiji Aonuma, there is a good reason for this.

Speaking with Kotaku, the Zelda series producer revealed that the Zelda Breath of the Wild sequel is being developed as the team had too many ideas for DLC, and the bigger changes couldn’t have been implemented easily to the original game through them.