Westfw, would you not agree that it is not truly open-source?
To make an "Arduino" you need a design, the production information and permission to use the name. Only one of those things is available; the others are not. It is not 'closed' for hobbyists who want to make one or two, but if you wanted to make a hundred commercially, or make a variant called "Arduino Red", you can't, because commercial production is closed, not open. That much is pretty clear. It's in that sense that I said that the project is currently "wrapped around" a closed piece of hardware...
D