Here is an ImageWatch extension for Visual Studio 2012 that supports the automatic display of IPP Asynchronous matrices. It was developed by Wolf Kienzle at Microsoft. To use it, download and extract the attached .zip file. Double click on the .vsix file to install it. Then copy the IPP.natvis file to %USERPROFILE%\My Documents\Visual Studio 2012\Visualizers\ on your machine and (re)start the debugger. When you are debugging IPP Asynchronous code, the ImageWatch window will automatically display matrices.
Some notes about usage:
Let me know if you have any trouble using this or have any feedback.