@Mathi,
Well, first, there's actually 5 types* of elves with high elves beingng split into the most sub-factions with the most prominent being the Eldritch Council, Swifthawk Agents and Order Draconis. The first two get further fluff in the redone island of blood set and Shadows over Hammerhal as well as the Council's presence in the Phoenicium city. City of secrets took a bigger look at the Exiles (dark elves) and how they run their "legal shipping" operations in Sigmar's cities.
As for Wanderers, i doubt they'll be done like the Shadowkin. Their race has been humbled by fleeing the realm of life and returned to it pleading for Alarielle's forgiveness and have taken to wandering the wilds of the other realms trying to undo the chaos taint while harmonizing with those lands.
So Wanderers will probably get a varied-nature nomad treatment than the shadowy forest assassins of the past.(with how popular Breath of the Wild is I wouldn't be surprised if they take inspiration from it on how one elf can go from bow-shooting elk rider to fire resistant-armored knight on horseback, undead or otherwise for his mount)
With the Phoenicium city, realm of light and Teclis' and Tyrion's whereabouts unknown there's still a ton of stuff to uncover about the elves.
I'd also advise giving GW time to get to it all, that "something for everyone" was pointing to the fact the alliance books combine to have about 60 sub-factions they are in the process of fleshing out bit-by-bit as they also work on the new factions and a progressive storyline.
Final note, my internet connection is buggy right now but there's alot of new AoS news and leaks that I'll be posting later.
*(five types of Aelves: Sylvaneth, Wanderers, Exiles, Shadowkin, High Elves)
@Artoban's Ghost,
I wouldn't say that, remember that AoS was planned out back in 2011-2012 so many things in 8th were planned to go into AoS (Demigryphs, sky-cutters, iron breakers, etc.) and we've seen the older stuff like ghouls and savage orcs reworked new and potent sub-factions.