TaleWorlds has a cult classic franchise with Mount & Blade. Warband, the follow-up to the first Mount & Blade but didn't earn its own number, placed right behind Skyrim in Ars Technica's Steam Gauge for “Most Played Older Releases (2012 or Before) on Steam”. It is my most played game by far with over 800 hours recorded, albeit over the course of several years. I also participated in (and even hosted) organized events on a regular basis throughout that entire period, too.
The new game looks quite interesting, though. While the previous game's mods were more popular than its default content, its Siege mode drew a lot of attention. Armies were able to push siege towers against fortresses and slowly overtake the defenders — attackers had unlimited respawns, but defenders did not. Eventually they would take a flag. Mods even played with destructible walls and buildings to force the attackers to create their own ways in, and the defenders to adapt in response. It seems like this version is expanding upon that with battering rams, catapults, and other team-controlled devices. While this is not as effective as a Napoleonic-era cannon, this might lead to the same effect.
They also flaunt time and weather rendering effects, and board games. Still no release date (or even publisher). This information is not even on their website yet. They're not known for rushing, at least.