The official PR states:
For the first time ever, fight as the darkspawn in BioWare’s Dragon Age: Origins. In the new downloadable content pack, Dragon Age: Origins Darkspawn Chronicles, players have the chance to experience life on the dark side, playing as the corrupted army of the Blight, are enslaved to the will of the Archdemon. In Europe, Darkspawn Chronicles will be available for the Xbox 360 videogame system for 400 Microsoft points and PC for 400 BioWare points on May 18th and on PlayStation Network for £3.99/€4.99 with its launch date to be announced later.
The Darkspawn Chronicles offers players a look at an alternate history in the Dragon Age universe. Darkspawn Chronicles begins as your character dies during the Joining ceremony, and the Grey Wardens now march under Alistair’s command. As a hurlock vanguard, you alone hold the power to make thralls of their fellow darkspawn and drive them into the heat of battle as Denerim burns! This adventure gives you command of genlocks, hurlocks, shrieks, and even the mighty ogres.
Key features include:
o Imagine a world without heroes, where the greatest among you never became a Grey Warden.
o Play through the Fall of Denerim from the perspective of the darkspawn.
o Complete the module and unlock an epic darkspawn item for use in Dragon Age: Origins and Dragon Age: Origins – Awakening.
o Use the “Enthrall” ability – recruit any darkspawn you encounter into your party.
Dragon Age Origins won over 30 “Best of 2009” awards, was named “RPG of the Year” by Game Informer, G4 and SpikeTV and was hailed by The New York Times as “…perhaps the best electronic game made yet.”