With a TechNet article “Office ProPlus” released on December 15th 2012, Microsoft finally release an indication to fix the most annoying licensing problems with regards to Microsoft Office 365:
The “pre-release” content clearly describes itself with this disclaimer:
This is pre-release content and only applies to the Microsoft Office Customer Preview. It doesn’t represent the current in-market service or guarantee future availability of any SKUs or features
The article describes the “5 install per user on PC or Mac” (of Microsoft Office ProPlus) as a benefit of the Enterprise E3, Academic A3 and E4/A4 plans.
The article also mention “Volume Activation (KMS/MAK)” as a feature that is not included in E3/A3 and E4/A4 BUT feature a note to explain special features for E3/A3 and E4/A4:
“Volume activation for Office 365 Enterprise E3, Office 365 Enterprise E4, and Office 365 ProPlus are limited to installations on Microsoft Windows Server 2008 R2 and newer with the RDS role enabled or Windows To Go installations. In either case, users accessing these installations need to be licensed users of Office 365 Enterprise E3, Office 365 Enterprise E4, or Office 365 ProPlus. “
In my world this means that Microsoft will allow KMS or MAK activation on Remote Desktop Servers including Citrix based servers.