Namco Bandai Provide further information detailing the digital and physical pre-orders of DARK SOULS III on Xbox One, specifically regarding the backwards compatible version of the original DARK SOULS. Please find below an official statement:
“We are proud to give gamers a variety of ways to purchase and experience their games as well as offering a host of differently timed promotions for those that grab their copies early. With that, we are excited that all digital pre-order and day one physical disc purchases of Dark Souls III for Xbox One will include a copy of the original Dark Souls. If you digitally pre-order Dark Souls III for Xbox One from the Xbox Store, you will receive a token for the original Dark Souls within 7-10 days of your purchase. If you purchase a physical disc of Dark Souls III for Xbox One from a retail store at launch, a digital token for the original Dark Souls will be included with the game at participating retailers while supplies last”.
Assets available for the game via the press vault: http://www.bandainamcoent-press.com/application/front/releaseschedule