Checkout the download point here (it’s hosted on codeplex).
The Blueprints Manager is an extension to Visual Studio that allows you to embed guidance into a kind of project template (called a Blueprint).
For example, suppose your organization builds a lot of web services and you have standard best practices and requirements for how that’s done. Some of the requirements can be delivered as boilerplate code, some are comments and documentation, and some of it comes in the form of references to other templates (e.g. such as an installer). The Blueprint payload can include all of those things, and Blueprints are composable.
One complaint – there’s nothing listed under Source Code. I predict that Microsoft will see greater usage of tools like this when they provide the code!