[tommis]

They've released it under "MICROSOFT REFERENCE SOURCE LICENSE (MS-RSL)" some time ago, but I'm not sure what the future plan is.

You can view and download the whole .NET source here: http://referencesource.microsoft.com/

[csulmone]

That is awesome. What about the CLR VM?

[ptx]

If they just give you the cheese, the trap doesn't work.