I think the world is waiting for a new programming language. It is about that time historically and we are going into a situation where cores have replace GHz. Its not clear what the model will be. I think a lot of the new languages are models for how the language designer is thinking (or not) about these new realities. At the same time, the hop from PC to Post-PC like the hop from Mini to PC, brings new constraints (dammit, where'd all my memory go) and a new environment to the programming (what do you mean the computer moves while my program is running).