Wasn't the big rumor that the white guy in it was Tommy Vercetti?
Ray Liotta, Vercetti's voice actor, has claimed he is not participating in the game. That's why everyone thought the rumor was fake. I still have some hope about that though, it doesn't have to be Ray Liotta exactly to play Tommy Vercetti, maybe he got into some controversy with Rockstar, or maybe he is busy, or maybe he just doesnt want to play him again. But they could just find another voice actor, it wouldn't be that hard.