Enterprise Scrum is a co-evolutionary, empirical, subsumption-based management framework to deliver the most business value in the shortest amount of time while balancing the benefits for all people involved, based on an abstraction, generalization, extension and parametrization of Scrum for generic, business, technique-pluggable, and scaled management purposes.
Enterprise Scrum Definition 3.0
Here is the Enterprise Scrum Definitiion 3.0 (expected date 5/1/2017 or earlier).
Here is the Enterprise Scrum Executive Summary
Enterpirse Scrum Introduction
Here is the Enterprise Scrum Introdution at Medium.