Civ 7 - 4th Age DLC Confirmed?

"Now there's some content after that that players are familiar with. The Cold War kicks in, you know, and obviously history has marched on to the present. That's not something you're going to see in Civ 7 at launch, but we'll be talking about the plans for how that get's into the game when it's the right time."

- Ed Beach, today's livestream

So it sounds like age 3 culminates with the crisis of the World Wars, and we should expect a Cold War to present age DLC in the future.

P.S. Just speculation, but I'd wager money that the 4th age will have a climate change crisis. So the arch of crises will be something like barbarian invasion, disease and revolution, world war, and then climate change.