The OpenCL 1.0 specification
was released a year and a half ago, but now it has been superseded by the OpenCL 1.1 specification.
This revised specification that comes out of the Khronos Group brings support for three new data types, support for handling commands from multiple hosts and processing buffers across multiple devices, enhanced use of events to drive and control command execution, more OpenCL C built-in functions, and improved OpenGL interoperability.
The proprietary ATI/AMD and NVIDIA Linux graphics drivers will likely support OpenCL 1.1 in the very near future, but sadly the open-source drivers still lack any form of Open Computing Language support right now besides a non-working Gallium3D state tracker.
The press release with more details on OpenCL 1.1 can be found at Khronos.org