The new DevExpress.Persistent.BaseImpl.EF.v14.1.dll library contains
ready-to-use Code-First entities. These include general-purpose entities (like Person, Task, Address, etc.), and entities that are specially designed to be used with XAF extra modules and security system (Event, FileData, User, Role, etc). This addition makes it easier for an XAF developer to get started building applications using Entity Framework for data access.
UI customizations (i.e. Application Model differences) for these entities are also available in the Business Class Library Customization Module.
I think that even non-XAF customers can benefit from these ready-to-use EF data models: they can be used as a guide or reference when customers provide their own implementations.