Microsoft DirectX 12 is DirectX 11 with Mantle Integrated

Sources have revealed that Direct X 12 is basically DirectX 11 with Mantle absorbed, the performance increase on Xbox One is in doubt.

NVIDIA Talks DX12, DX11 Efficiency Improvements - PC Perspective

Microsoft announces DirectX 12, coming 2015

Should you be worried if DirectX 12 will be Windows 10 exclusive

Microsoft Unveils DirectX 12 Ultimate: The GPU Feature Set For the

Microsoft To Discuss DirectX 12 on 20th March at GDC 2014

Will DirectX 12 improve FPS? - Quora

Tested: DirectX 12's potential performance leap is insane

BUILD 2015: The Final DirectX 12 Reveal - PC Perspective

News - AMD Details DirectX 12 Multi-GPU And Shared Memory

Discussing the State of DirectX 12 With Microsoft & Oxide Games

DirectX 12 vs. Mantle vs. DirectX 11 CPU & GPU Benchmark

Editorial - AMD Bets on DirectX 12 for Not Just GPUs, but Also its

Why DirectX 12 is a game-changer for PC enthusiasts

Tested: DirectX 12's potential performance leap is insane