The new DevExpress.Persistent.BaseImpl.EF.v14.1.dlllibrary contains ready-to-use Code-First entities. These are 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), which makes it easier for an XAF developer to get started building an application using Entity Framework for data access.
UI customizations (i.e. Application Model differences) for these entities are 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, because they can be used as a guide or reference when customers provide their own implementations.