Darks Souls, the spiritual successor to the PS3 exclusive Demon's Souls, is said to feature a fully seamless world and over 60 hours of game time, according to an interview on 4Gamer, as translated by Andriasang.
Game director and producer Hidetaka Miyazaki revealed that, unlike Demon's Souls where dungeons were sectioned off, Dark Souls will focus a lot on exploration and to help with it, the game will feature a fully seamless map.
When compared to games like Oblivion, Miyazaki suggested instead of thinking of Dark Souls as a "full dungeon" where previously separate stages have now been intertwined seamlessly together.
Miyazaki also noted that the game will be significantly longer than Demon's Souls. Expect at least 60 hours in comparison to Demon's Souls 30-40 hour play time.
Unfortunately, Miyazaki does not plan on releasing any demos for the game as the team feels that the appeal of Dark Souls can't be conveyed through a demo. That and Miyazaki doesn't think he's all that great at making demos.
Dark Souls is due later this year on both the PS3 and Xbox 360.