Intel has released an updated OpenCL driver for Windows 7 and Windows 8



From Anandtech:

Intel has released an updated OpenCL driver for their 3rd Generation Core (Ivy Bridge) and 4th Generation Core (which we can safely call as Haswell) products that brings OpenCL 1.2 support on both the CPU and the GPU, moving a step up from OpenCL 1.1 in previous releases. The driver also implements better integration with both Direct3D and OpenGL. The driver is for Windows 7 and 8 only. Intel has also released an updated SDK along with the driver. The full release notes for the SDK release can be found here. Intel also supports OpenCL 1.2 on Xeon Phi.

  Intel Releases OpenCL 1.2 Driver and Tools Update for Ivy Bridge and Haswell