DirectX 12 will be essentially supported on all Fermi and later Nvidia GPUs, on AMD's GCN-based chips and on Intel's Haswell and later processors' graphics units.[45]
So if the above is true there will be no need to upgrade for many of us (not to get DX12 compatibility anyway). Let's hope it's supported in the drivers and applications soon.
Even a test demo to show it's potential would be nice. Direct X 12 contains many features similar to AMD's 'Mantle'. This means less overhead and more grunt for gaming...
Probably so. Looks to me like there is a lot of under-the-hood stuff going on to enhance performance through various means. So it looks like even non-directx games may still benefit from it.
That is, if I'm understanding the information I'm currently reading at http://blogs.msdn.com/b/directx/archive/2014/03/20/directx-12.aspx