Its likely they'd be running out of things to include at this point. But every game has had 2 Race Pack DLC's. Beastmen, Wood Elves. Tomb Kings, Vampire Coast.
So assuming we get a pre order race pack(Kislev) and the 4 base factions that have army books left(Daemons, Ogres, Chaos Dwarfs, Dogs of War). And the big assumption that they'll create a race from complete scratch like Cathay for their first DLC race pack. Whats the likely hood of getting Nippon next?
They'd be a little further east than Cathay and if they included the island they might as well shrink the pacific and let the world map wrap around.
Nippon from the start was my most wanted of the lesser factions. Japanese mythology is both rich and marketable.
Request scorched body textures, poisoned dying animations for infantry's skeletons, a blood slider that allows us to control how much blood appears in battle and make proper death animations for all ethereal units so they vanish for Blood for the Blood God 3.