Rise of Tomb Raider could likely be one of the first AAA games to have DirectX 12 support. Its developer Crystal Dynamics is planning a massive update that will add a new renderer, and new content (VFX, geometry, textures).
The latest version of the game comes with a “DX12.dll” library in its folder. And why it does not currently support DirectX 12 a new renderer selection has appeared in the games’s launcher.
DirectX 12 is currently only available to Windows 10 users using NVIDIA hardware in the “Kepler” and “Maxwell” series or AMD’s Graphics CoreNext 1.1 and 1.2 GPUs.