Will there be DLC ? (Sudden Strike 4)

I suspect that they will. But purely on adding equipment. Since, in principle, covered almost the whole theatre of events, in addition to the African company and the war in the Pacific.

Kannami
and the Russo Japanese conflict is not enough

Beyuk Of Gidayatov
So far have released two campaigns associated with the evacuation from Dunkirk (for the Germans and for the allies) and a map Kursk for skirmish. Also, it seems like the developers did with the game tools to change any of the game files. So I wait for mods on new missions, campaigns and units.