
Components in Maestro will be isolated from each other. Therefore a large part of the language will deal with message passing. The language will have access to all of the .Net framework. However it won't be meant as a stand alone language. Instead it will be used in tandem with other .Net languages.
Maestro is still in the early phases of development at Microsoft. You will not hear a lot about it for a while. Doctor Dobb's did an article on it. Or at least they interviewed a guy from Microsoft about Maestro. Some have determined that Maestro looks a lot like the Erlang programming language. The Maestro development team begs to differ.