[Update #2]: Total War: Warhammer 3 has now finally arrived, though not without some technical trouble.
[Update]: Creative Assembly has now detailed the rather massive changes to Chaos corruption.
As a part of the most recent announcement, Creative Assembly revealed Total War: Warhammer 3's final and most unique launch faction - Chaos Undivided led by a Daemon Prince of your own creation! By doing a variety of tasks to honor the Chaos gods your Daemon Prince will be given thematic new body parts and weapons, daemonic units to play around with, as well as ridiculously powerful abilities to go along with his newfound status as a demigod.
If you're curious what all of this madness looks like in actual gameplay, allow me to share with you two of the previews. The first one is a brief cinematic showing off some of the customization options, while the second one is a pure gameplay preview giving you a close up look at what Daniel the Daemon can do with the Chaos Undivided faction. Have a peek:
Besides the actual concept itself which is undeniably awesome, the Chaos Undivided faction also excites me because of the sheer potential its gameplay systems have. Imagine if the whole customization menu was used for normal units like Chaos Warriors and Chosen to represent them growing stronger and accepting new gifts. Or how about Greenskins and their scrap system to represent them becoming battle-hardened and decked out with shiny new loot?
Best thing is, even if Creative Assembly doesn't expand the system and simply leaves it there for Chaos Undivided, there's nothing stopping modders from adapting it to other factions. So no matter what happens, I have a feeling Chaos Undivided will be a true gamechanger for Total War: Warhammer as a whole!
Whatever the case may be, I'll make sure to let you know once Total War: Warhammer 3 launches and the first few mods start becoming available. Until then, you can read a little bit more about it over at the official FAQ.