Well, some folks did a bit of sleuthing in the game files when G&K came out, and there were a number of unused assets that appeared to be related to the American Civil War, so I'd say its a fair assumption that we could be seeing an ACW scenario fairly soon, though I highly doubt it would include a full fledged CSA civ, as it would be rather odd to include a "nation" that was never recognized as such by the international community.
It could however include an additional Indigenous American Nation, as several of those were involved tangentially in the conflict (The Comanche come to mind)
It could however include an additional Indigenous American Nation, as several of those were involved tangentially in the conflict (The Comanche come to mind)