-Saw an article about black women in Hollywood that mentioned the news as a throw away line.
-Googled the casting news and found bupkis.
-Saw a video with Mira Nair and Lupita clicked on it and voila! Mira announced it at the Glamour awards and no one cared to report on it.
-Movie is about real life Ugandan teenage math prodigy Phiona Mutesi.