What can you do?
ISVs can now query named-users license information. ISVs can use the information to apply license fees for their intellectual property.
Why is this important?
ISVs can use the same named-user licensing information that Microsoft uses. The concurrent users licensing model of Microsoft Dynamics AX 2009 is no longer available.
How was this performed in previous versions?
In Microsoft Dynamics AX 2009, ISVs applied licenses based on the concurrent users model.
In Microsoft Dynamics AX 2012, Microsoft moved away from the concurrent users model, and switched to the named-users licensing model. In Microsoft Dynamics AX 2012 R2, ISVs can use the same named-user licensing information that Microsoft uses.
My above blog is based on Microsoft's Official information.