Better than six months ago, but no real surprise here: the black primary vote is an unmovable, monolithic entity that almost always votes en masse for the candidate either with the highest name recognition, the power of incumbency, or the most "Christian"-sounding name. It's not a popular thing to say, but this is the real reason that Sanders (or any non-establishment candidate, for that matter) has no chance of winning anywhere near the Deep South.
Yeah, just ignore that Georgia is a more conservative/moderate state and let's blame all the ignorant black voters.