The OpenCL C++ kernel language released in the OpenCL 2.1 provisional specification is being finalized and will be released imminently, also using SPIR-V for run-time execution.

The Khronos Group is moving ahead with OpenCL 3.0... by making everything in OCL 2.x optional and going back to OpenCL 1.2. Bold move. We'll see if it pays off for them.