Dark Souls, the spiritual successor to Demon's Souls, was supposed to be out on September 15. It won't be.
Instead, the game will be delayed a week to September 22. From Software, the game's developer, stated that the game is being delayed "due to various circumstances". From Software did not go into greater depth than that.
Be sure to check out Kotaku's hands on with Dark Souls.
DARK SOULS」の発売日が9月22日へと1週間延期に（DARK SOULS） [4Gamer.net]