On May 16, 2017, what is now the current release of OpenCL was released. According to the Khronos Group, it includes the following changes:

• OpenCL 2.2 brings the OpenCL C++ kernel language into the core specification for significantly enhanced parallel programming productivity
• The OpenCL C++ kernel language is a static subset of the C++14 standard and includes classes, templates, Lambda expressions, function overloads, and many other constructs for generic and meta-programming
• Leverages the new Khronos SPIR-V 1.1 intermediate language that fully supports the OpenCL C++ kernel language
• OpenCL library functions can now take advantage of the C++ language to provide increased safety and reduced undefined behavior while accessing features such as atomics, iterators, images, samplers, pipes, and device queue built-in types and address spaces
• Pipe storage is a new device-side type in OpenCL 2.2 that is useful for FPGA implementations by making the connectivity size and type known at compile time and enabling efficient device-scope communication between kernels
• OpenCL 2.2 also includes features for enhanced optimization of generated code: Applications can provide the value of specialization constant at SPIR-V compilation time, a new query can detect non-trivial constructors and destructors of program-scope global objects, and user callbacks can be set at program release time
• Runs on any OpenCL 2.0-capable hardware (only driver update required)