so is directx 12 ultimate only for next gen gpu's?

Mac Gaming to Gain DirectX 12 Support via CrossOver 23 - MacRumors

DirectX 12 Ultimate Features, Tools and Minimum requirements

DirectX 12 Mixed Multi-GPU: It Works, For Now

How is DirectX 12 Different From 11?

Microsoft Unveils DirectX 12 Ultimate: The GPU Feature Set For the Next Generation of Games

RedGamingTech

Dxdiag shows DirectX 12 Ultimate as Disabled. How to enable? - Microsoft Community

NVIDIA Pushes Out DirectX 12 Ultimate Developer Preview Driver 450.82

Intel reveals that the ARC GPUs do not have native DirectX 9 support, but use DX9 to DX12 emulation - News