>>96183253
there's no roadmap at the moment and not even rumors about the legacy factions returning, only speculations

matching the factions as pairs of sworn enemies is tricky because the factions aren't evenly split, even tow has a gross asymmetry, and some lesser factions are the obvious nemesis of a faction that might have a way more central and prominent role in the setting
take kislev for example, their most direct antagonists are the chaos hordes of the north, but chaos is such an important faction that many would feel obligated to pair it with a similarly important faction, like the empire
and what about factions like demons and chaos dwarfs? are we counting them as their own thing or should we bundle them together with chaos? because it's not a given that they will remain a separate faction if they're reintroduced into the game, it's very possible they might return as units for specific armies of infamy for chaos warriors

if pairings were to be made, this is what could be suggested
>kislev vs warriors
>empire vs vampires
>dogs'o'war vs skaven
>bretonnia vs tomb kings
>high elves vs dark elves
>wood elves vs beastmen
>dwarfs vs greenskins
>cathay vs ogres
>lizardmen vs demons
>nobody vs chaos dwarfs
but you can see for yourself how some pairings are clunky, forced or obligated