The Traitor Legions is a long awaited codex supplement handling the 9 Traitor Legions. Its going up for pre-orders this weekend according to the what we are being told, and now we have a little bit additional intel.
via anonymous sources on Faeit 212
-Datasheets for: Ahriman, Magnus, Kharn, Lord of Skulls, Exalted Sorcerer, Tzaangors, Rubic Marines.
-There will be 26 formations
-Updated Tzeentch Discipline as well as updated Slaanesh and Nurgle Discipline. also the traitors hate Disciplines will be inside.
-Detatchments, Artefacts, Warlord Traits and Tactical Objectives for all 9 Traitor Legions
-Contains all the Army Special Rules from Wrath of Magnus
via klull from the Combat Podcast on Faeit 212 (thank you for chiming in)
Pre-order dates are correct. Our review will come out Saturday (very later Friday night in 'Murica) for TL this weekend. Can't talk about it but before folk get too down, this is theme-y and as the Warhammer Community post said, gives each of the 9 TL unique warlord traits, artefacts, expanded lores for those two remaining Chaos Gods, rules and making CSM that specific legion, benefits from formations and building an army a certain way. However, AFAIK there are no new models accompanying TL and Codex: Imp Agents, but...2017 (a mere month away) will be a cool-ass year for more models.