The Crimson King
by David Haire
seen from China
seen from United Kingdom
seen from China

seen from Germany

seen from Malaysia
seen from Canada
seen from Netherlands

seen from Germany
seen from United States
seen from Türkiye
seen from Russia
seen from Türkiye
seen from Vietnam

seen from Netherlands

seen from United States

seen from United States
seen from Türkiye
seen from Türkiye

seen from United States

seen from United States
The Crimson King
by David Haire
Emperor's Children for 10th
Most likely the EC will be in 10th Edition, thus finishing the MONOGOD Chaos Space Marine factions. As for what could be brought out I see it being in 3 phases. Phase 1: The Warbands. This will be for EC fans while waiting for the army we will see something like that with the World Eaters did during the CSM 9th codex release where you used that & a White Dwarf magazine, though we replace Kharn with Lucius, and Khorne Berzerkers with Noise Marines. With the different Combat Patrol rulers I see the magazine issue giving a combat patrol for them. 1X Lucius the Eternal (95 pts) 3X Noise Marines 5 man squads (85 pts) 1X Helbrute (140 pts) Enhancement, Intoxicating Elixir. Both the Noise Marines & Lucius getting new models available before the true launch and there would be a story reason.
Eidolon is about ready to bring the 3rd Legion back into the Galaxy truly, but knows he can't use them all as they would be to useless to fight as a united Legion some being now shells of themselves they would be a waste of skill, while others are to strong and will try to usurp leadership in the new formation of the Legion. So have these Lords & Champions go out and take planets to weaken others in a specific part of the galaxy where a plan Eidolon needs to do something (I do have an idea it will be shared in another post). If they take these worlds it will be theirs & the 3rd will never try to force any orders of them, & when the 3rd comes they will be allowed to use some new weapons and soldiers that will come with the new Legion.
Phase 2: The Legion. Eidolon has brought the Emperor's Children he knows that will be able to help achieve a plan. The units that come with this phase would be Eidolon who could also be made as a generic EC Lord.
A more non-battle line unit would be the return of the Palatine Blades... kind of. Some of these new ones will have been the ancient ones from 30K while others will have proven themselves. But now they have fused with with their blades feeling whatever it touches. This is also not a Daemon Possession but more like that of the mutilators. This warp fusion also has mutated them where they now wear Death Masks of Fulgrim, a Chaos version of the Sanguinary Guard.
I don't think they will get unique Terminators and Helbrutes, but instead their units will get a unique weapon option for each of them, this is how Sonic Dreadnoughts be a thing.
I also think they will either get Helbrutes or Terminators in phase 2 (I would lean to the former) while the other will be out phase 3. Phase 3: The Primarch. Fulgrim is here with the rest of the army.
Along with their Primarch we will see the other unique Legion weapon unit, a Psyker for them, & a unit that takes after their Primarch's snake look mixing tech & warp mutation resembling the Laer.
Sorry this feels incomplete but there are 2 other parts that will bring it more all together.
He Rises, by David Haire (Trollfeetwalker), via DeviantArt.
Witches’ Sabbath by David Haire
Lord of Iron
by David Haire
Astartes
by David Haire
Daemon Primarch Lorgar
by David Haire
40K Daemon Primarchs
by David Haire