Dark Souls III is about a month away, and Bandai Namco has announced all the extras you get for pre-ordering the digital version of the game.
If you pre-order on Xbox One, you get a digital copy of the original Dark Souls game, which is a Xbox 360 backwards compatible game.
Both the PlayStation 4 and the Steam versions come with a free copy of the soundtrack. If you own Dark Souls II on Steam, you get $5 off your pre-order.