During PDC, Microsoft released Beta 2 of Monad. I documented where to get Beta 2 in a recent blog post. However, at PDC, MS also relased an updated version of the CLR - which is incompatible with Monad B2. The good news is that an updated drop of Beta 2 is appaerntently being prepared that will target the updated CLR. No idea when this version is going to be going to a general release - but I expect is going to be coming to downloads soon.