The Aurox Armoured Transport is now available for preorder at Forge World.
Taking design cues from the Leman Russ and the Rhino, this is an STC vehicle seen in use by the Imperial Army during the days of the Horus Heresy (~M30, if you failed your Imperial History classes)
The product page also includes two datasheet downloads – the standard Aurox Armoured Transport for use by the Imperialis Militia and cults, and the Saturnyne Pattern Aurox used by the Solar Auxilia.
The Aurox is a resin vehicle kit, costing £58.