DantePQ

I think GW will focus on newer factions going forward then repacking models and releasing them with smaller battletomes. They got quite serious with tournament supoort and balance is quite important and it's hard to balance countless "small" battletomes. I think Shadowkin for that reason ( and another - GW still want to sell their WFB minis) could be bigger Battletome in DoT vein - maybe they will include a lot "older" kits. I can see them fitting Witch Elves, Shadow Warriors, Dark Riders, Assassins easily, that's the reason I think for example Eternal Guard models could easily fit with Light Elves That's why I think GW can release Aelves tome with all other units not used in main factions Battletomes.

And how it special save againts magic work with spells with area of effect ? It all depends how expensive are those Battalions if you got to pay 200-300 tax it's not that great but looks like Stormcast get nice boost anyway along with proper pricing ! Good job GW (and I dislike Stormcast Eternals a lot)

Maybe yes It depends what kind of theme they want to follow but I doubt they will use more then 3 older units and looking at aesthetics Witch Aelves and Shadow Warriors/Sisters look very similar to Saih and Shard. Maybe add Dark Riders + 2 new units , but it would push Shadowkin almost into DoT territory regarding number of units and kits. Also fluff wise Tyrion/Teclis are more connected with Slaanesh then Malerion, they all went after him looking for their people but it's said that Twins captured him. My wild guess is that Twins captured him freeing Aelves and then Malerion holds him captive in Uglu (that why Slaanesh demons look for him there) But to make it one story arc they would have to release Shadowkin, Slaanesh and then Light Elves who knows ?

I think any release will use some older kits with Shadowkin I suspect Witch Elves are quite easy go and then maybe Shadow Warriors/Sisters (or Corsairs) which makes perfect sens as both units are quite similar to Mistweaver and Shard I guess going by GW release policy get : Malerion as big kit monster some monster/monster hero - Morathi, maybe some kind of new monster heroes - Mistweaver,Saih and maybe something new New battleline (possibly dual kit) Witch Elves + Shadow Warriors Some bigger elite unit - some kind of cavalery. So : 2 leaders/behemots, 3 leaders, 6 units ( with new unit being possibly a dual kit and Witch Elves+Shadow Warriors) , new "bigger" elite unit. Some very much DoT and Sylvaneth alike.

It's pure speculation, any rumors we had were about Duardin Steampunk Dwarfs and even less rumors about Shadowkin

I get your point and would love elves more than anything (I have been HE player for 15 years and would love new "light" Elves with Tyrion/Teclis) but GW clearly with GH and Sylvaneth changed their policy regarding matched play, tournaments etc and Stormcast must be a part of it (and I hate their fluff and design). So far we got Sylvaneth and Tzeentch as proper "standalone" Battletomes, Destruction got one with Beastclaw Riders (but it's small battletome). So if GW releases lets say Duardin and Shadowkin by end of summer ( they are long rumored) and some Death&Destruction it would nicely balance number of proper Battletomes for each GA : Order : Sylvaneth, Stormcast,Shadowkin,Duardin - it's possible Elves and Dwarfs are one of the most popular factions and Stormcast are Stormast Chaos : Disciples of Tzeentch, Disciples of Slaneshh ( to release Slaneesh along with Shadowkin makes all sense considering fluff and their Disciples of Tzeentch-Stormcast release policy + easy to release with 40k as well) Destruction : Beastclaw Riders, new Battletome (maybe released with Duardin - again makes sense) Death : new Battletome (maybe with option to make 2-3 armies like Arcanites and Demons in DoT) That would mena 5 more Battletomes in 2017 - it's possible.