Really interesting discussion going on here... my interpretation of "Open hardware" is that you should be able to retrofit in your existing board the new features that are being released. A clear example is that the new autoreset or autoboot feature of Diecimila is very useful, and the plain old Arduino serial board is very easy to retrofit. I tested it and I am publishing it in the Arduino Playground. On the other side, the not-so-old Arduino USB NG boards are very difficult to retrofit, so I built a diecimila compatible USB board using thorough-hole parts (the only SMD part is still the FTDI chip), with all the diecimila features from the schematic published by the Arduino team. There are a lot of electronics lovers out there that prefer to build the boards themselves, believe me. It is a more enjoyable Arduino experience. I love this kind of challenge so I am doing it to fill a gap, until I am told not to do so... If Arduino were "Open", not only publishing the schematics and the PCB files, but opening the evolution of the project to the whole community, we should have a hyper-arduino by now, with 1,000 of new features and not only autoreset and the overload protection (which are nice features, by the way...)... and also a larger user community and testers as well.