So, there are two facts I don't understand. First, everyone and their uncle is moving here: all the large counties in the metro are growing like crazy. Second, some of the demographics are changing wildly: blacks are moving into the suburbs way more than anywhere else even though the city is growing too. What's going on? Everyone can't be working for Coke or CNN, and it seems a strange place to move to for "lifestyle"-type reasons.
White people are moving into the City. Atlanta is getting close to only being plurality Black now, as Blacks are moving out of the city and into the Suburbs, and White Suburbanites are moving into the Exurbs.