DirectX 12 Requires New Graphics Cards?

[Dwel13R]

Following link says current cards will not support all features:
http://hardware-360.com/directx-12-requires-new-graphics-cards-to-utilize-all-features/

Nvidia says:
http://blogs.nvidia.com/blog/2014/03/20/directx-12/

Quote:NVIDIA will match Microsoft OS support for DX12. Over 70% of gaming PCs are now DX11 based. NVIDIA will support the DX12 API on all the DX11-class GPUs it has shipped; these belong to the Fermi, Kepler and Maxwell architectural families. With more than 50% market share (65% for discrete graphics) among DX11-based gaming systems, NVIDIA alone will provide game developers the majority of the potential installed base.

Amd says:
http://www.amd.com/en-us/press-releases/Pages/amd-demonstrates-2014mar20.aspx

Quote:AMD revealed that it will support DirectX® 12 on all AMD Radeon™ GPUs that feature the Graphics Core Next (GCN) architecture.