The Khronos Group has just released Vulkan.
It is derived from AMD's Mantle API.
Vulkan requires new graphics drivers and only graphics cards that support OpenGL ES 3.1 or OpenGL 4.x _may_ support Vulkan.
Minimum GPU support depends on vendor. For Intel it is Ivy Bridge and up. For Nvidia it is GeForce 600 and up. No sure about AMD. Checkout their driver download pages - they are releasing new drivers now that supports Vulkan and supported GPUs are mentioned in release notes.
Quick Look: Vulkan Performance on The Talos Principle