Nothing of the info Apple published so far seems to indicate that they'll implement that. And again, based on the track record of Apple, feels unlikely they won't implement something on their own.

From the video cited upthread: "This transfer uses a data schema that was built in collaboration with the members of the FIDO Alliance. It standardizes the data format for passkeys, passwords, verification codes, and more data types"

I worked on this standard and we’re all excited that it’s rolling out to most of not all password managers and platforms.