Props to Jay212033 (via Bill Shanks of TheBravesShow.com) for the info.
Pitcher: Mike Minor, Kyle Cofield, Erik Cordier, Richard Sullivan, Scott Diamond, Lee Hyde, Brett Butts, Brandon Beachy, Tommy Palica, Mike Broadway, Stephen Marek, Jacob Thompson
Catchers: Orlando Mercado, Benji Johnson
Infielders: Mauro Gomez, Juan Gonzalez, Luis Bolivar, Donnell Linares, Eric Duncan, Travis Jones
Outfielders: Cody Johnson, Concepcion Rodriguez, Willie Cabrera
As far as I know, this is the first time it's been noted that Romero is with the Braves. Romero was once a top prospect in the Twins organization and played 144 games for the Diamondbacks between 08 and 09, hitting just .239 with a .619 OPS.
So that gives a complete picture of the Braves full season affiliates to start the season. This week Talking Chop will have season previews for each of the teams.