Gamasutra has a feature on Dark Souls where associate producer Andrew Davis comments on the story. He says the spiritual sequel to Demon’s Souls will "definitely" have more of a melancholy feel to the story and respawning is part of the plot.
In Dark Souls, you play as a character cursed with immortality. Dying hollows your character, perhaps implying a loss of humanity. When you die you lose all of your souls, but like Demon’s Souls it is possible to reclaim them by progressing to where your character fell. Instead of a central location, characters respawn at bonfires, safe zones where players gather. Humanity itself is a core part of Dark Souls represented in your character’s appearance and as a parameter, but From Software has not said much about it.
From Software pushed the release of Dark Souls for PlayStation 3 in Japan back one week from September 15 to September 22. Namco Bandai will publish Dark Souls for PS3 and Xbox 360 in North America where it is still scheduled for October 5.