As promised, Microsoft has taken the lid off of their DirectX 12 reveal earlier today at GDC 2014. Get ready for some nice performance gains on machines with lower end CPUs, but not until December of 2015 at the earliest.

The good news is that most current, modern GPUs will be able to make use of DirectX 12. Support for DirectX 12, at least for Nvidia, will be on all "the DX11-class GPUs it (Nvidia) has shipped." This includes cards from the Fermi line, Kepler, Maxwell, and beyond.

From the Nvidia Blog

There is no word yet as to what operating system this will be available on. Let's just hope Microsoft doesn't pull a DirectX 10 move here and limit DirectX 12 to Windows 9.