Source: The Marietta Daily Journal 
The Atlanta Braves are expected to announce today the team plans to relocate to Cobb County with a new stadium being ready for the 2017 season. They will be leaving Turner Field after their 20 year agreement expires at the end of the 2016 season.
Braves announce plans to leave Turner Field after 2016 season. Team will relocate to Cobb County, with new stadium ready for 2017.
— SportsCenter (@SportsCenter) November 11, 2013 
We have secured a large tract of property at this location & will work to build a world-class ballpark for our fans. #Braves 
— Atlanta Braves (@Braves) November 11, 2013 
The new stadium will be built near the intersection of I-75 and 285. The current site is under contract and set to close in early 2014.
We will have more information on this breaking story throughout the day.
WSB-TV in Atlanta tweeted an aerial picture of the new stadium location in Cobb County.
— WSB-TV (@wsbtv) November 11, 2013