Disappearing from Georgia roads are the signs with the narrow width Highway Gothic series D font and the exit numbers posted above a horizontal rule. These age old standards are going by the wayside as signs with larger Highway Gothic Series EM and external exit tabs are added. Some freeways appear to be resigned whole sale, while other projects focus on a particular interchange, or series of signs.
A telltale sign of an interchange upgrade or addition is the use of the newer sign standards. Take for instance Exit 55 on Interstate 75 at Eldorado.
This rural diamond interchange was reconstructed in 2013 to encompass a much larger footprint. Many 1960s-based interchanges along I-75 throughout Georgia are slated for redesigns to modern standards. AARoads Forum member afguy posted several renderings of projects planned or underway throughout the state in the Georgia thread.

Signs at the split of Interstates 75 & 85 north were replaced by 2012. GDOT saw the need to replace them again with APL’s, despite that they are the wrong application in this instance due to a lack of optional lanes.
Other projects previously replaced all guide signs along I-85 from Georgia 20 (Exit 115) to the South Carolina line and throughout Interstate 985.
All signs on I-985 have external exit tabs now. #georgia #roads
— AARoads (@AARoads) October 26, 2015