AnandTech had the opportunity to take a pre-release version of DirectX 12 for a spin on a couple of AMD and NVIDIA based graphics cards. The site notes DirectX 12 looks very promising and that it can provide a big performance boost.
You can check out the full article and benchmarks over here.
But to that end, it’s clear that DirectX 12 has a lot of potential in the right hands and the right circumstances. It isn’t going to be easy to master, and I suspect it won’t be a quick transition, but I am very interested in seeing what developers can do with this API. With the reduced overhead, the better threading, and ultimately a vastly more efficient means of submitting draw calls, there’s a lot of potential waiting to be exploited.