: Often refers to the most recent "refresh" or updated ISO build provided by Microsoft to include integrated security updates. Key Features of Office Professional Plus 2016
So, assembled, it describes a version of Microsoft Office Professional Plus 2016, specifically for 64-bit systems, in English, possibly indicating it's a newer version or newly purchased. This seems to be a software product key or description for a legitimate copy of Microsoft Office Professional Plus 2016. swdvd5officeprofessionalplus2016w64english new
: Indicates a "Software DVD" ISO image, typically distributed via the Microsoft Volume Licensing Service Center (VLSC) . : Often refers to the most recent "refresh"