I got a closer look at warbands and saw that some of them have interesting backgrounds that do not show anywhere else in the game.
See that goblin’s house with yellow light in it? You won’t meet it in known kingdoms nor factions.
Background looks much like Ghulvania or Dark Court, but you’ll never see that element there.
Armored Legion uses Hall of Guardians background, Fire and Fury - Broken Spire (possibly), Entangled Woods - Forest of Thorns.
Will we see some new art in the game soon?