Difference between Arduino.cc and Arduino.org Recently I have noticed that there are two arduino sites, arduino.cc and arduino.org.  They both have the Arduino logo and both sell what seems to be official Arduino boards. Also, arduino.org came out with the Arduino Zero board first. What is the deal here? Has Arduino partnered with another site? Any ideas appreciated.
The short of it is that there was a falling out within the Arduino people and now there are two groups laying claim to the "Arduino" name.

Arduino LLC runs arduino.cc. They are the steward of the Arduino IDE and libraries and own the "Arduino" trademark in the United States, and also owns the "Genuino" trademark outside of the United States. Arduino SRL (fka Smart Projects SRL) is the company that assembles(assembled) the majority of Arduino boards for Arduino LLC, runs arduino.org, and owns the "Arduino" trademark inside Italy and all of the other countries they have registered the "Arduino" trademark.

Arduino SRL recently decided that they are no longer beholden to Arduino LLC and has stopped paying licensing fees for using the Arduino name. Whether this is justified or not has not been fully tested in court yet.