Some information about From Software's follow up to Demon's Souls has been published in Famitsu and translated by adriansang.com
The game previously known as Project Dark should become even harder than Demon's Souls. Exploration and learning from one's mistakes are focus again. It will get rid of the hub world, instead all the areas will be connected to each other and will be more diverse than in Demon's Souls. Also there will be more weapons and spells and an evolved form of the co-op experience that was found in Demon's Souls. World tendencies are gone however. It will come out on both PS3 and Xbox 360, unlike it's PS3 exclusive predecessor.
An open-world Demon's Souls with even higher difficulty. I'm in, who else?