Microsoft ADO.Net team released (this month June 2009) a set of features that build on top of Entity Framework 4.0 Beta 1
The features included in this CTP are :
- Templates for Self-Tracking Entities (N-Tier support)
- Templates for POCO (Plain Old CLR Objects) Entities
- Code-Only Programming Model that allows you to write Entity Data Model based applications without requiring external artifacts
CTP can be downloaded here
Enjoy it.