Starting with CSLA .NET 3.6.0, the VB version of the framework is a community effort. The VB code is maintained by a team of volunteers, who are porting the C# code to VB.
The official version of CSLA .NET is in C#, and is available from the download page.
Please note as of version 3.6.3 all tests pass. There are some subtle differences between the VB and C# implementations due to differences in how the languages support lambda expressions. We hope to resolve these differences once Visual Basic 10 is available and provides functional parity with C# for using lambda expressions.
You can download CSLA .NET VB here: