Zelda series producer Eiji Aonuma won’t confirm or deny the potential of playing as Zelda or the inclusion of co-op in the sequel to Breath of the Wild, but his sly answers in interviews leave room for interpretation.
In an interview directly following The Legend of Zelda: Breath of the Wild sequel reveal in the E3 2019 Nintendo Direct, IGN’s Samuel Claiborn asked Aonuma, “I know for a long time, people have wanted to play as Zelda, and there have been some games where you get to play as Zelda a little bit. It looked like Zelda and Link were hanging out a lot together. Do you think this is going to be the game in which we get to play as Zelda, maybe as a co-op game?”
Source: IGN.com Nintendo Won't Deny, Co-Op, Playing as Zelda in Breath of the Wild 2