Version 2.03 of the .NET StockTrader sample application was released. Key features are:
Service Pack 3 for SQL Server 2005 has been recently released. You can get it here. Note that now there are different versions depending on what SQL Server you are using (Express, Express with Advanced Services, etc).
I have written a simple set of classes (two, actually) that can be used to implement a simple state machine over an enumerated type (enum).