my only issue with this casting, if true, is the implications for a potential Barbara Gordon. If they are to keep Barbara as Jim's biological daughter, then that means Barbara would be black and it would be YET ANOTHER instance of a red-headed (female) character getting race-changed to African American.
Of course, they could always go the adopted daughter route and still make Barbara a white red-head. And, of course, this is even assuming Barbara would be a factor in the story at all given that it is focused on a younger Batman.
Still, though, if this is true, then it just seems to be part of this obvious trend. I mean, why does it only seem to be targeting white red-headed characters and making them black?
In a vacuum, I don't really have a problem with a black Commissioner Gordon or even a black Barbara Gordon. I have no real attachment to Barbara Batgirl as I do to Mary Jane Watson or Ariel (Little Mermaid). My favorite Batgirl will always be Cassandra Cain, who is half-Asian like me. So I would be much more sensitive about race-changing Cassandra Batgirl.