During the GALAX GOC 2015 event, Futuremark showed off their latest 3DMark benchmark that utilizes the Windows 10 exclusive DirectX 12 API. The new benchmark is called 'Time Spy', something that will really stress out your new DX12-powered GPU.
Futuremark Product Manager Pasi Virtanen said that the company is developing their latest 3DMark benchmark for DX12, with the new version of 3DMark focusing around the technology and features that the DirectX 12 API allows for, and something that future DX12-powered games will include. There are many DX12 benchmarks in the new 3DMark, but one of them is Time Spy, which was the one shown off at the GALAX GOC 2015 event. The benchmark runs at 2K (2560x1440) or 4K (3840x2160) and is 5x heavier than 3DMark Fire Strike... which is going to really push GPUs up against the wall and steal their lunch money.
The company hasn't teased a release date just yet, but we Virtanen did tease that it would be released in Q1 2016.