From the announcement:
The Lord Marshal of a Solar Auxilia battlegroup is the supreme commander of his forces. He may have the total respect of his men or be a despot of the highest order, but he will be a master strategist, fearsome duellist and an experienced frontline commander prepared to sacrifice his forces in defence of the Imperium.
Auxilia Tactical Command Sections facilitate the flow of orders from central command, directing the movement of thousands of men and vehicles, as well as coordinating devastating aerial and orbital strikes upon a foe. The Proclaimator’s communications equipment links the section to the battlegroup’s command and control structure, allowing the Strategos to issue orders efficiently and directly to the units under his purview. The Vexilarius carries the cohort’s standard, a great honour usually only bestowed upon a warrior who has performed an act of bravery or feat of arms, whilst the Veteran Auxilia defend the section itself from advancing enemy.
The Solar Auxilia Tactical Command comprises six models including a Lord Marshal armed with a paragon blade and archaeotech pistol, and a full Auxilia Tactical Command Section consisting of a Strategos, Proclaimator, Vexilarius, a Veteran Auxiliary with meltagun and Veteran Auxiliary with grenade launcher. Also included are optional helmeted and unhelmeted heads for both the Lord Marshal and Strategos.
A Daemon Prince of the Ruinstorm, spreading madness and slaughtering all before him in baleful frenzy, Samus is here! A hulking monstrosity, towering over mortals, Samus, a daemon of murder made manifest, was incarnated at the height of his powers as the walls between reality and the Warp were stretched thin by the Word Bearers’ dark rites at Calth. If his corporeal flesh was destroyed, he would soon return again to wreak havoc and claim more souls for the powers of Chaos, the sound of his name echoing through the Warp and in the minds of men.
Samus, Daemon Prince of the Ruinstorm is the latest model in the Horus Heresy Character Series. Presented in a collectors edition black box, Samus can be built with his right hand clutching a dismembered Space Marine or as an open claw. Samus can be used in Word Bearers Legion armies and Codex: Chaos Daemon armies in Horus Heresy games. He can also be used in Codex: Chaos Daemons and Khorne Daemonkin armies in standard games of Warhammer 40,000.