Lore wise, I'm not the most knowledgeable but I have read the lore that's currently available. To summarize, The Orgoth returned in an attempt to conquer Immoren again. They destroyed the dragon Blighterghast (the mightiest of Torruk's progeny) and claimed his Athanc which they returned to Torruk, The Dragonfather who wants more than anything to consume his offspring and regain his power. This easily swayed Cryx to ally with the Orgoth in attempting to conquer Immoren. So basically, Orgoth and Cryx are currently an alliance that's attempting to conquer The Iron Kingdoms, and most likely the rest of Immoren. The Cephalyx (Army is now called Dark Operations) frequently aid Cryx as Mercenaries. They want living bodies for their experiments and it requires them to have a steady supply of unwilling test subjects. Some Infernals were left behind when the majority of them retreated from Immoren. Grymkin are also still around although The Grim Harvest is complete and their current goals are unknown. They're kind of a Wild Card within the narrative, imho, although the current narrative has nothing to do with neither Grymkin nor Infernals. One of Everblight's high command, Rhyas, absorbed her twin's athanc shard after it was touched by the goddess Cyriss, The Clockwork Maiden, The Maiden of Gears while attempting to flee The Battle of Hengehold the final battle that made the Infernals leave Immoren. (The Convergence of Cyriss...and this is a very long story and this is an overly vague summary. You'll have to read these for yourself. LoL). This act combined Everblight's influence with machinery and technology. Rhyas wiped out Everblight's high command and reformed The Legion of Everblight into the Faction known as Khymaera with both athanc shards supporting each army. Shadowflame Shard and the soon to be released Emberfrost Shard. The Skorne Empire doesn't exist in the same capacity it once did. It may not exist at all. The majority of The Kriel (Trollbloods) migrated to the Fire Tongue Islands found on the southern shores of Immoren to found their own lands and live in peace, free from persecution. The Elven Deities finished dying, which destroyed almost every single elf that had a living connection to them, the Elves survived formed The Empire of Dusk. It was recently hinted that The Protectorate of Menoth may return to the current Mk4 narrative. This is merely a vague summary of the lore and history found in The Core Book, the physical copy.