This all comes from Twitter:
Rough translation: hypothetically, if the next major update includes a new character, which one would you like?
My guess is they've already decided to include a new character with the next major update (they did confirm new characters would be included post-launch), but they're trying to see which one is the most requested.
Source
Thanks Mockingbird for the help with the translation![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
「ゼルダ無双」は9月1日にver.1.2.0アップデート予定です。その後の大型アップデートで、例えば(あくまで例えばです!)【プレイアブルキャラクタを 追加する】としたら、皆さんだれがいいですか?
Rough translation: hypothetically, if the next major update includes a new character, which one would you like?
My guess is they've already decided to include a new character with the next major update (they did confirm new characters would be included post-launch), but they're trying to see which one is the most requested.
Source
Thanks Mockingbird for the help with the translation