We have been working close to 2 years on this so it is only natural to be happy. Tasneem - from my lab has been chairing the working group on webCL - I want to say that she did a wonderful job and it was great to work with Khronos Group.
You can find the specification here https://www.khronos.org/webcl/
And here is the official press release from Khronos: https://www.khronos.org/news/press/khronos-releases-webcl-1.0-specification.
webCL can help any developer harness the underlying power of GPU's and multi core device directly from the browser. It will allow parallel processing directly the browser and can enable a completely new category of web apps such as the one based on physics engine, video editing, image and photo processing and manipulation, etc...
I also want to remind everybody that we have an implementation of this - go and check it out: https://github.com/SRA-SiliconValley/webkit-webcl.