Games Workshop has a new codex up on their website for pre-order. Codex: Craftworlds gives a detailed history of the Eldar craftworlds, as well as rules for a new unique detachment, the Craftworld Warhost. There’s several editions you can get, including the Limited (only 800 available) Farseer Edition. They also have the new Eldar Autarch, Eldar Farseer Skyrunner, and the Eldar Windriders jetbikes up for pre-order as well.
From the announcement:
War Elevated To Artform.
Though they once ruled the stars, the Eldar brought about a terrible curse that shattered their empire forever. Crossing the galaxy on their vast world-ships, lead by the most powerful psykers in the universe, they rage hard against the dying of the light. Under the leadership of Farseers, psychics capable of planning thousands of years into the future with patience and confidence unmatched by any race, the Eldar wish to see their empire burn brightly once more, illuminated by the glory of total war, before fate consigns them to dark oblivion.
This 160-page, full-colour hardback book contains:
– detailed backgrounds and stories of the fall of the Eldar, with full descriptions of those who survived the cataclysmic manifesting of Slaanesh;
– materials, colour schemes and heraldry for various different craftworlds and Aspect Warrior shrines, with stunning photography showcasing quality Citadel miniatures;
– datasheets, Formations, Warlord Traits and Relics, plus two psychic disciplines and a unique Detachment – the Craftworld Warhost;
– backgrounds and rules for the full range of Eldar miniatures* including the Autarch, Windriders, Warlock Skyrunner and Farseer Skyrunner.
*this does not include Harlequins, who are covered in Codex: Harlequins.