Going by wikipedia it took AMD almost two years to release an SDK with full OpenCL 2.0 support and Intel wasn't that much faster. Most of the Open Source implem

Going by wikipedia it took AMD almost two years to release an SDK with full OpenCL 2.0 support and Intel wasn't that much faster. Most of the Open Source implementations also seem to have died around the OpenCL 1.2 mark, with some having incomplete 2.0 support. So while you can probably blame NVIDIA for kicking a dead horse it looks as if something else got to it first.