On Stack Overflow, I've seen a few people referring to the MVC Futures library
What is this project? How do I use it? Where is the documentation?
Check Eilon Lipton's Blog :
In this blog post I'll introduce you to a feature that's not even part of the main ASP.NET MVC download. It's part of the separate MVC Futures download, which includes prototypes of features that we're thinking of including in a future version of ASP.NET MVC.