I am pleased to announce the final release of CSLA 4 version 4.5 with support for the following platforms:

• .NET 4.5
• Windows Runtime (WinRT)
• .NET 4
• Silverlight 5

The new release is available via nuget and the CSLA download page.

This release includes a number of important features and changes, including:

• Support for Windows Runtime (WinRT), so you can simply recompile your existing CSLA .NET business classes for WinRT with little or no changes required to migrate to the new platform
• Support for the new async and await keywords in .NET 4.5 (and in .NET 4 and SL5 via the async targeting pack)
• Enhancements to the business rules engine
• Enhancements to Windows Forms support via the Csla.Windows namespace

The entire CSLA .NET dev team has put a lot of work into this release, and we hope you enjoy it and find it useful!