The publishers of Dark Souls have announced that if you preorder Dark Souls (the sequel to Demon's Souls) you will get a free upgrade to the collector's edition. As you can see, there is some really nice stuff in this collector's edition that many people would have paid the extra $20 for. You will receive for free if you preorder:
- Limited Edition Art Book
- Strategy Guide
- Sound Track
- Making of DVD
- Game Guide
- Custom Designed Metal Case
You can preorder at Amazon and pay only $1 for release date shipping meaning it will arrive at your door the day it's released.
Dark Souls will play very similar to Demon's Souls but will be in a different world, have a different story, and will be much harder. The environments will also be more varied and it will be one continuous world with no loading screens. I personally am very excited about this due to Demon's Souls being absolutely awesome!