This image and text is from Beast of War
Through cunning, raw power, political acumen, and tactical genius, Lord Arbiter Hexeris has furthered his own schemes while simultaneously strengthening the Skorne Empire. The lord arbiters occult knowledge goes well beyond the lore of the skorne, and no enemy arcanist is safe from his vampiric thirst for mystical secrets. To oppose him in battle is to be sapped of arcane power as he steals and transforms the energies of his foes.
I really like the look of this model! Really aggressive and mid combat. The Armor has improved since his primal incarnation, so this might be reflected in his stats! As presumed he has kept his GulGata, which hopefully will keep its rules etc.
From the blurb it seems like he will have something like Arcane Consumption (like Psy Vampire, but permanent) But it will be interesting to see when he is fully unveilled!
Greetz