We are bringing back the standalone Intel® SDK for OpenCL™ Applications. Leah posted a nice article explaining the reasoning behind this decision: https://software.intel.com/en-us/blogs/2015/11/13/bringing-back-the-intel-sdk-for-opencl-applications.
You can proceed straight to downloading the Intel® SDK for OpenCL™ Applications from the following page: https://software.intel.com/en-us/intel-opencl/download
Here is a comment from our SDK lead:
The SDK supports both 32-bit and 64-bit targets. (so you can basically build your applications for both versions)
However it can be installed on 64-bit OS only.