Major Nelson of Xbox announced that ID@Xbox developers can now begin to utilize the Unreal Engine 4 for their Xbox One game development.
Here is what Xbox had to say,
Unreal Engine 4 provides a rich suite of tools for content developers including the Blueprint visual scripting system, giving designers and artists unprecedented power to construct gameplay logic without programming, a visual material editor, the Persona animation system, and Matinee timeline-based machinima and cinematics system.
In case you missed it, take a look at the ID@Xbox: Power of Independent Developers video here.
Source: Xbox Wire