Some people say the latest version of Intel Application Accelerator is 2.3. And, really, the official website offers to download this version and nothing more, but it also said that versions 4.0 and 4.7 exist http://www.intel.com/support/chipsets/imsm/sb/cs-020649.htm
http://www.intel.com/support/chipsets/imsm/sb/cs-020649.htm