Grigori Melnik just blogged about the release of the first CTP for the Unity Framework. It can be downloaded from codeplex here.

I think I mentioned Unity before. The Unity framework is build on top of ObjectBuilder2. ObjectBuilder2 seems a much better factory system than ObjectBuilder (infamous for it's bloated misuse in CAB). I have been following along with some sample on how to use ObjectBuilder2 and I quite like it. Obvious, nowhere near as powerful as Windsor, Spring.Net or StructureMap yet, but I understand Microsoft needs it's home-grown factory system, and ObjectBuilder2 seems easy enough to use.

The Unity framework uses ObjectBuilder2 to provide a IOC. It can be used like so:

I'll certainly be looking into it!