I confirmed that MSIX is also supported. I see that the EDS is an Intel confidential document so I assume that and Intel rep assisted in getting you the document. By the way, it is also on the Embedded Design Center (EDC). If you would like to get a Privileged account, go to Intel® Embedded Design Center Member Benefits FAQ and click on "Apply for Privileged access". This way you can use the EDC and quickly access Intel confidential content.