Over the last few days, more and more people asked about gender swapping in TFD on the official Discord channel. Originally, this started from a comment by user Running Bunny, who noted that the future releases for Ultimate Descendants will be predominantly male (since most of the girls already have their Ultimate variant, except Luna and Hailey).
Source: N4G PC Parts of The First Descendant Community Are Asking for Gender Swapping, Devs Offer Their Two Cents