Demon's Souls Deluxe Edition

Demon's Souls Official Strategy Guide Replacement Program Launches
Atlus has you covered (and also guided)

Neo Steam: The Shattered Continent Goes to the Dark Side with Underworld Map, Demon’s Souls Promotion
Demons sealed since ancient times have been unleashed in this latest addition to Atlus Online’s fantasy-steampunk massively multiplayer online role-playing game (MMORPG), Neo Steam: The Shattered Continent

Atlus Launches Full Demon's Souls Website
And by "full" we mean full of win.

Atlus Expands Demon's Souls Pre-Order Bonus to Include Full Soundtrack
Reserve EITHER edition and get a free 40-page art book AND a free soundtrack CD

Beautiful, compelling, and at times unforgiving, Demon&;apos;s Souls is the hardcore RPG experience PS3 owners have been waiting for since the platform&;apos;s launch. Revolutionary online features define your adventure like never before, presenting seamless interconnectivity that serves in every instance to enhance the single-player game. Unprecedented in its depth and subtlety, peerless in its relentlessly challenging gameplay, Demon&;apos;s Souls is the ultimate action RPG.