Rocky Lhotka released version 3.5 of his CSLA .NET Application Development Framework. If you are unfamiliar with CSLA, Per Rocky-
“The framework enables developers to leverage the power of object-oriented design as the basis for creating powerful applications. Business objects based on CSLA automatically gain many advanced features that simplify the creation of Windows Forms, Web Forms, WPF, WCF, WF and Web Services interfaces.
CSLA .NET allows great flexibility in object persistence, so business objects can use virtually any data sources available. The framework supports 1-, 2- and n-tier models through the concept of mobile objects. This provides the flexibility to optimize performance, scalability, security and fault tolerance with no changes to code in the UI or business objects.”
I did a book review of Expert C# 2005 Business Objects, which is based on CSLA quite a long time ago that may be somewhat useful:
You can download CSLA .NET v3.5 as well as listen to the announcement on .NET Rocks!