The prescriptive guidance is coming fast and furious now. The User Interface Process Application Block is a framework for abstracting the control flow and state management out of the user interface layer. The Configuration Management Application Block is a solution to manage configuration data across your applications. And the Updater Application Block provides a mechanism to build the ability to update directly into your application.
Also, from ScottW, I discovered that the Data Access Application Block v2 shipped last Friday. Hasn’t shown up on MSDN yet.