If DX12 features are hardware specific then the Xbox One would have been manufactured with that in mind... Meaning why would Microsoft hold that back until know?... Short answer scam.
Company NDA bro,
We fanboys dont know yet if DX12 will unlock some hardware that was meant for DX12 instead of the current tech like DirectX11 hardware,
lets wait until GDC technology event for that - March 20 2014.
So Microsoft would sue them selves if they broke the NDA...
AMD ndas. sorry.
What does AMD have to do with DX12?... Its called Microsoft DirectX.
Amd and Microsoft have something new they been working on together thats supposed to be announced at GDC . All amd products are optimized for windows aside from the PS4 which still had to use parts from directX 11, so it makes sense that they would work together on some level. Not to mention that there are articles floating around that say the Xbone api and Mantle are the same. AMD and Microsoft will always work together M$ has a long standing relationship with those guys. Makes me wonder if AMD will start to favor M$ because they more on the same page.