In preparation for your adventure through the Boston Wastelands, Bethesda is affording you the chance to experience the Capital Wastelands by giving you a copy of Fallout 3 for Xbox 360 when you pre-order Fallout 4 for Xbox One.
By pre-ordering the game via the Xbox Marketplace, you can receive a copy of Fallout 3, which according to Bethesda, will have Xbox One Backwards Compatibility support in the future, for Xbox 360. The code for the game will come 7-10 days after your initial pre-order.
All of this comes after the announcement that PC mods will work on Xbox One copies of Fallout 4. This is great news for the Microsoft gaming community at-large, so take advantage of the deal, as it is only available for a limited time.
Fallout 4 releases on PC, PlayStation 4 and Xbox One on November 10th.
Source: BethBlog