Here’s an overview of the expansion, via Sony:
Beyond the northern mountains, the borderlands of the Banuk tribe challenge all who dare enter to survive the extremes. But now this frozen wilderness harbors a new threat, and for Aloy, a new mystery – one she’s determined to solve.
The Frozen Wilds contains additional content for Horizon Zero Dawn, including new storylines, characters, and experiences in a beautiful but unforgiving new area.
Pre-orders are now available on the PlayStation Store.
Watch the trailer below. View a set of screenshots at the gallery.