Don't get too excited just yet, but there's a chance that Firaxis is working on some sort of DLC expansion for Xcom 2. It's pure speculation at this point, but as highlighted on SteamDB (via GameWatcher) it seems as though there is an unannounced content drop on the horizon.
All we know at this stage is that the database was updated a couple of months ago. Beyond that, whatever this DLC/expansion ends up being, at least it has a catchy name: SteamDB Unknown App 785300. That's what the kids are calling it at any rate.
That's not a lot to go on, so we're left speculating whether it's a minor update with new cosmetic items or a second major expansion in a similar vein to War of the Chosen. We'll keep an eye on this one and update you if and when something more concrete emerges.