It´s a like all other named DLC´s (DoD, TfV) an Country Pack for important Minor States, which will come earlyer or later and not integrated with an big Major DLC yet to end an started, but not finished Part.
In TfV for example are the Commonwealth-States. In DoD and BfB are the Balkan-States finished. They are small to medium with an medium Patch and integrate like the Comrades said already Focusses for missing Countrys, new Decissions, Pictures, small new Elements as well as Repairs, Bugfixes and such for existing things.
Don´t expect much Changes and new Things there like an R & D Tree for Fighters or so.
The bigger named DLC´s (MTG, WTT and La Ressistance) are more for the Major Countrys and some new integratet important Minor States like Mexico, Poland, Mandschuko and similar. That are the big ones and integrate new Elements like R & D, World Map Changes, Economy and the other bigger things. That DLC´s get longer in Development incl. the big Patch.
All of them are Expansions to the Base Game, which comes out End 2016. I personally play only with all Expansions, because the Game needs that. An 2nd WW without full working Commonwealth, an full working Resistance and Spy System, the Balkan-States and more is a No Go! With the 5 upcomming and useable DLC´s the Game get in the right Direction and go further that Direction.
Esp. after the Refit from Airforce and Army R & D as well as Buildup-Refit, which will come and is a must have.
