I was stunned to see that. For the record, the Braves won't confirm that that's the design they're going with, as MLB has not made the official announcement yet. But in my experience, Paul Lukas is rarely wrong about these things. (I'm a regular reader of his Uni-Watch blog.)
What's odd is that when the Braves wore their throwback uniforms last season, they omitted that part of the design for reasons that seemed pretty obvious.