The Tech Report learned that Khronos' upcoming Vulkan (glNext) API is based on AMD's Mantle. Vulkan standardizes and replaces Mantle, and it will reportedly be very easy to switch from a Mantle rendered to Vulkan. Vukan is a low-level API that completely exposes that GPU is a separate processor, runs asynchronously to the CPU.
Full details over here.
glNext session: @thekhronosgroup needed a starting point, and AMD came to us with Mantel spec, said do what you want, no strings attached.