[Update #2]: Total War: Warhammer 3 has made the Immortal Empires combined campaign map free for all owners!
[Update]: Total War: Warhammer 3's Update 2.1 has greatly enhanced the modding tools and fixed many bugs.
It took what feels like forever to get here, but Total War: Warhammer 3 has now finally unleashed the Immortal Empires combined campaign map as a part of a free update! As such, all of the races and factions from Total War: Warhammer 1, 2 and 3, along with most of the territories from all three games, now exist on a singular and absolutely gigantic map that's just begging to be conquered!
Immortal Empires alone would've be good enough to keep me happy for a very, very long time, but Creative Assembly has instead decided to push things even further for this update. There's a brand new DLC featuring four powerful Champions of Chaos, the long-awaited arrival of blood & gore effects, a full rework of the previously miserable Warriors of Chaos faction, numerous buffs and tweaks to a whole assortment of older factions and legendary lords, and the list goes on for a while.
If you're just interested in the short version, allow me to share with you the recently posted preview. It should give you a pretty good impression of what all of this looks like in action. Have a gander:
On the other hand, if you want all of the nitty-gritty details, you can find what you seek over at the official patch notes. There is an absolutely ridiculous amount of changes in there, so you might want to grab a cup of coffee before you dive in.
The final thing worth mentioning is that Total War: Warhammer 1 and its follow-up Total War: Warhammer 2, as well as their DLCs, are going to be on a rather steep discount until August 29th. So if you need either of the games to complete the trilogy and unlock Immortal Empires, this is probably your best chance to grab them before the holiday sale later this year.
Have fun with all of the new content, and I'll leave you with the cinematic trailer showcasing all four of the Chaos champions. Enjoy!