Late last week a second release candidate for WCF RIA Services was released. RIA Services are an application design pattern that lives between ASP.NET and Silverlight in a multi-tier architecture. Inside RIA Services you can host application logic for data access control, queries, and other data operations. Integration with Silverlight components and controls allows for data validation and access control to automatically be made available to the client.

The update from the release candidate at this year’s MIX event includes bug fixes, improvements to tracing and debugging, and some minor feature enhancements. This release candidate also has a corresponding April update to the RIA Services toolkit.

This installation requires having previously installed Visual Studio 2010 and the Silverlight 4 Tools.