Official indeed: Dark Souls to PC

"Dark Souls: Prepare to Die Edition will include an untold chapter in the world of Lordran where the player must stop the spread of darkness at all costs by facing and defeating the Dark Knight Artorias of the abyss. Available world-wide August 24th, 2012 for your PC."

Now it is truly official, from the words of Bandai themselves, and not just pictures from a German magazine. Dark Souls is coming to PC.