I created an administrative installation point and patched it to version 15.6.3055 and deployed it successfully.
When I go to C:\Program Files (x86)\Adobe\Acrobat Reader 2015\Reader\AcroRd32.exe and look at Properties\Details\File Version shows 15.6.3055.240876 which is expected, but when I open Adobe Reader and go to Help\About Adobe Reader, it displays Version 2015.006.30033. It also displays 15.006.30033 in Programs and Features.
Adobe Reader Plug-Ins display Version 15.6.30352.237999.
This is causing confusion. How can this be fixed?