Is a black Superman an experiment to satisfy creativity?
Want to see if they could racial swap an iconic character and see what people would think of it? Seems like something JJ Abrams would do like revamping the Star Trek timeline or having Krypton not explode in his Superman Flyby script, who knows, maybe they're doing it as a publicity stir which seems to be the motivation most of the time with racial swapping.
Feels like something being done that is pointless.