One of the key tenets of MBF is to be able to support building systems based on a Service Oriented Architecture. Ram in his RunOfTheMillBlog covers approaches and challenges in supporting SOA with todays tools and systems as well as looking forward. He links to his  MSDN article on the topic : .NET Architecture Center Home: SOA Challenges: Entity Aggregation (Building Distributed Applications) which is part of PAG's Integration Patterns.

This is all very interesting reading. The goal is that MBF will give Enterprise Architects much better tools to solve some of the difficult challenges in implementing a SOA based architecture. Actually MBF will introduce something that could be referred to as "Entity Decomposition" rather than Entity Aggregation to give one common view of entities with varying subsystem representation, we should have more on that later I hope.