Microsoft has announced DirectX 12 Shader Model 6.9 along with a set of Direct3D 12 improvements that target both shader authoring and the runtime plumbing behind modern engines.
Shader Model 5.0 is old, having come out in 2009 with DirectX 11. It's long overdue for some innovation and a few changes to make it better than it is. Sure, games look great using the underlying ...