Yes, but (beside it requires connecting your Steam account to a 2K one) so far it is unclear (and IMHO rather unlikely, as nothing was stated in that regard), if that release/addition is accompanied by a patch. And as one who has played Civ6 a lot...it dearly needs further patches, even more than IR. IR might lack content, but Civ6 lacks polish and its AI is terrible. Yes, you can have fun with it, but it is more a kind of puzzling fun and you have ignore the AI and many flaws. Which is possible for a time, as it has just the magic Civ formula.
But even that only goes so far and as a person how prefers a game which challenges me (and that preferably w/o just throwing out AI boni), I have to say that Civ6 has lost the struggle to styay on my playing radar quite a time ago. It's first defeat was the battle vs. Humankind (which showed how tactical battles on a civ style map can work out, if the AI is not completely incompetent) and finally got crushed completely by Old World, which is basically superior in any way if it comes to balance, game mechanics or AI (the only limitation you have to accept is that it has "less" scope in terms of covered eras and available civs, but what you get makes up for that, IMO)